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Katrina Owen @kytrinyx http://exercism.io Overkill

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No content

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1 2 ... 3563 3564 class Thing #... end /app/models/thing.rb

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Oh. Shit.

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1 2 ... 3563 3564 class Thing #... end /app/models/thing.rb

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1 2 ... 3532 3533 class Thing #... end /app/models/thing.rb

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something different

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README

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README Bob is a lackadaisical teenager. In conversation, his responses are very limited.

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README

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README Bob answers 'Sure.' if you ask him a question. He answers 'Whoa, chill out!' if you yell at him. He says 'Fine. Be that way!' if you address him without actually saying anything. He answers 'Whatever.' to anything else.

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test suite

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test suite

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test suite "Does this cryogenic chamber make me look fat?" Sure.

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test suite

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test suite "WATCH OUT!" Whoa, chill out!

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test suite

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test suite "" Fine. Be that way!

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test suite

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test suite "Tom-ay-to, tom-aaaah-to." Whatever.

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edge cases test suite

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test suite

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test suite "Ending with ? means a question." Whatever.

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test suite

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test suite "I HATE YOU" Whoa, chill out!

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test suite

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test suite "Let's go make out behind the gym!" Whatever.

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test suite

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test suite "WHAT THE HELL WERE YOU THINKING?" Whoa, chill out!

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test suite

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test suite "1, 2, 3" Whatever.

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test suite

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test suite "1, 2, 3 GO!" Whoa, chill out!

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test suite

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test suite "4?" Sure.

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test suite

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test suite "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" Whoa, chill out!

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code

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code 24 iterations

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class Bob def hey (input ) if input=="Tom-ay-to, tom-aaaah-to." return"Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input== "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." Iteration #1

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return"Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input== "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input=="" return"Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input==" " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno return"Whatever." end end end Iteration #1

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class Bob def hey (input ) if input=="Tom-ay-to, tom-aaaah-to." return"Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input== "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input =="1, 2, 3" return "Whatever." elsif input=="4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return"Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input== "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input=="" return"Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input==" " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return"Whatever." end end end Iteration #1

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class Bob def hey (input ) if input=="Tom-ay-to, tom-aaaah-to." return"Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input== "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input =="1, 2, 3" return "Whatever." elsif input=="4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return"Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input== "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input=="" return"Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input==" " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return"Whatever." end end end Iteration #1

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class Bob def hey (input ) if input=="Tom-ay-to, tom-aaaah-to." return"Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input== "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input =="1, 2, 3" return "Whatever." elsif input=="4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return"Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input== "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input=="" return"Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input==" " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return"Whatever." end end end Iteration #1

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class Bob def hey (input ) if input=="Tom-ay-to, tom-aaaah-to." return"Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input== "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input =="1, 2, 3" return "Whatever." elsif input=="4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return"Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input== "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input=="" return"Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input==" " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return"Whatever." end end end Iteration #1

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class Bob def hey (input ) if input=="Tom-ay-to, tom-aaaah-to." return"Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input== "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input =="1, 2, 3" return "Whatever." elsif input=="4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return"Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input== "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input=="" return"Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input==" " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return"Whatever." end end end Iteration #1

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Iteration #1 class Bob def hey (input ) if input=="Tom-ay-to, tom-aaaah-to." return"Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input== "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input =="1, 2, 3" return "Whatever." elsif input=="4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return"Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input== "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input=="" return"Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input==" " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return"Whatever." end end end

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class Bob def hey(input) if input == "Tom-ay-to, tom-aaaah-to." return "Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input == "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input == "1, 2, 3" return "Whatever." elsif input == "4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return "Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input == "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input == "" return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return "Whatever." end end end Iteration #1 class Bob def hey (input ) if input=="Tom-ay-to, tom-aaaah-to." return"Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input== "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input =="1, 2, 3" return "Whatever." elsif input=="4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return"Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input== "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input=="" return"Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input==" " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return"Whatever." end end end

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take-away #1

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take-away #1 whitespace is meaningful

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Iteration #2 class Bob def hey(input) if input == "Tom-ay-to, tom-aaaah-to." return "Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input == "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input == "1, 2, 3" return "Whatever." elsif input == "4?" return "Sure."

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Iteration #2 class Bob def hey(input) if input == "Tom-ay-to, tom-aaaah-to." return "Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input == "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input == "1, 2, 3" return "Whatever." elsif input == "4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return "Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input == "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input == "" return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return "Whatever." end end end

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Iteration #2 class Bob def hey(input) if input == "Tom-ay-to, tom-aaaah-to." return "Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input == "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input == "1, 2, 3" return "Whatever." elsif input == "4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return "Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input == "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input == "" return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return "Whatever." end end end

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Iteration #2 class Bob def hey(input) if input == "Tom-ay-to, tom-aaaah-to." return "Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input == "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input == "1, 2, 3" return "Whatever." elsif input == "4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return "Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input == "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input == "" return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return "Whatever." end end end

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Iteration #2 class Bob def hey(input) if input == "Tom-ay-to, tom-aaaah-to." return "Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input == "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input == "1, 2, 3" return "Whatever." elsif input == "4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return "Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input == "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input == "" return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return "Whatever." end end end

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Iteration #2 class Bob def hey(input) case input when "Tom-ay-to, tom-aaaah-to." "Whatever." when "WATCH OUT!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?" "Sure." when "You are, what, like 15?" "Sure." when "Let's go make out behind the gym!" "Whatever." when "It's OK if you don't want to go to the DMV." "Whatever." when "WHAT THE HELL WERE YOU THINKING?" "Whoa, chill out!" when "1, 2, 3 GO!" "Whoa, chill out!" when "1, 2, 3" "Whatever." when "4?" "Sure." when "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?\nno" "Whatever." when "I HATE YOU" "Whoa, chill out!" when "Ending with ? means a question." "Whatever." when "Wait! Hang on. Are you going to be OK?" "Sure." when "" "Fine. Be that way!" when " " "Fine. Be that way!" when " " "Fine. Be that way!" end end end class Bob def hey(input) if input == "Tom-ay-to, tom-aaaah-to." return "Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input == "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." elsif input == "WHAT THE HELL WERE YOU THINKING?" return "Whoa, chill out!" elsif input == "1, 2, 3 GO!" return "Whoa, chill out!" elsif input == "1, 2, 3" return "Whatever." elsif input == "4?" return "Sure." elsif input == "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" return "Whoa, chill out!" elsif input == "I HATE YOU" return "Whoa, chill out!" elsif input == "Ending with ? means a question." return "Whatever." elsif input == "Wait! Hang on. Are you going to be OK?" return "Sure." elsif input == "" return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == " " return "Fine. Be that way!" elsif input == "Does this cryogenic chamber make me look fat?\nno" return "Whatever." end end end

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take-away #2

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take-away #2 minimize boilerplate

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Iteration #3 class Bob def hey(input) case input when "Tom-ay-to, tom-aaaah-to." "Whatever." when "WATCH OUT!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?" "Sure." when "You are, what, like 15?" "Sure." when "Let's go make out behind the gym!" "Whatever." when "It's OK if you don't want to go to the DMV." "Whatever." when "WHAT THE HELL WERE YOU THINKING?" "Whoa, chill out!" when "1, 2, 3 GO!" "Whoa, chill out!" when "1, 2, 3" "Whatever." when "4?"

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Iteration #3 case input when "Tom-ay-to, tom-aaaah-to." "Whatever." when "WATCH OUT!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?" "Sure." when "You are, what, like 15?" "Sure." when "Let's go make out behind the gym!" "Whatever." when "It's OK if you don't want to go to the DMV." "Whatever." when "WHAT THE HELL WERE YOU THINKING?" "Whoa, chill out!" when "1, 2, 3 GO!" "Whoa, chill out!" when "1, 2, 3" "Whatever." when "4?" "Sure." when "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?\nno" "Whatever." when "I HATE YOU" "Whoa, chill out!" when "Ending with ? means a question." "Whatever." when "Wait! Hang on. Are you going to be OK?" "Sure." when "" "Fine. Be that way!" when " " "Fine. Be that way!" when " " "Fine. Be that way!" end

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Iteration #3 case input when "Tom-ay-to, tom-aaaah-to." "Whatever." when "WATCH OUT!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?" "Sure." when "You are, what, like 15?" "Sure." when "Let's go make out behind the gym!" "Whatever." when "It's OK if you don't want to go to the DMV." "Whatever." when "WHAT THE HELL WERE YOU THINKING?" "Whoa, chill out!" when "1, 2, 3 GO!" "Whoa, chill out!" when "1, 2, 3" "Whatever." when "4?" "Sure." when "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?\nno" "Whatever." when "I HATE YOU" "Whoa, chill out!" when "Ending with ? means a question." "Whatever." when "Wait! Hang on. Are you going to be OK?" "Sure." when "" "Fine. Be that way!" when " " "Fine. Be that way!" when " " "Fine. Be that way!" end

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Iteration #3 case input when "Tom-ay-to, tom-aaaah-to." "Whatever." when "WATCH OUT!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?" "Sure." when "You are, what, like 15?" "Sure." when "Let's go make out behind the gym!" "Whatever." when "It's OK if you don't want to go to the DMV." "Whatever." when "WHAT THE HELL WERE YOU THINKING?" "Whoa, chill out!" when "1, 2, 3 GO!" "Whoa, chill out!" when "1, 2, 3" "Whatever." when "4?" "Sure." when "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?\nno" "Whatever." when "I HATE YOU" "Whoa, chill out!" when "Ending with ? means a question." "Whatever." when "Wait! Hang on. Are you going to be OK?" "Sure." when "" "Fine. Be that way!" when " " "Fine. Be that way!" when " " "Fine. Be that way!" end

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Iteration #3 case input when "Tom-ay-to, tom-aaaah-to." "Whatever." when "WATCH OUT!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?" "Sure." when "You are, what, like 15?" "Sure." when "Let's go make out behind the gym!" "Whatever." when "It's OK if you don't want to go to the DMV." "Whatever." when "WHAT THE HELL WERE YOU THINKING?" "Whoa, chill out!" when "1, 2, 3 GO!" "Whoa, chill out!" when "1, 2, 3" "Whatever." when "4?" "Sure." when "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?\nno" "Whatever." when "I HATE YOU" "Whoa, chill out!" when "Ending with ? means a question." "Whatever." when "Wait! Hang on. Are you going to be OK?" "Sure." when "" "Fine. Be that way!" when " " "Fine. Be that way!" when " " "Fine. Be that way!" end

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Iteration #3 case input when "Tom-ay-to, tom-aaaah-to." "Whatever." when "WATCH OUT!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?" "Sure." when "You are, what, like 15?" "Sure." when "Let's go make out behind the gym!" "Whatever." when "It's OK if you don't want to go to the DMV." "Whatever." when "WHAT THE HELL WERE YOU THINKING?" "Whoa, chill out!" when "1, 2, 3 GO!" "Whoa, chill out!" when "1, 2, 3" "Whatever." when "4?" "Sure." when "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?\nno" "Whatever." when "I HATE YOU" "Whoa, chill out!" when "Ending with ? means a question." "Whatever." when "Wait! Hang on. Are you going to be OK?" "Sure." when "" "Fine. Be that way!" when " " "Fine. Be that way!" when " " "Fine. Be that way!" end

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Iteration #3 case input when "Tom-ay-to, tom-aaaah-to." "Whatever." when "WATCH OUT!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?" "Sure." when "You are, what, like 15?" "Sure." when "Let's go make out behind the gym!" "Whatever." when "It's OK if you don't want to go to the DMV." "Whatever." when "WHAT THE HELL WERE YOU THINKING?" "Whoa, chill out!" when "1, 2, 3 GO!" "Whoa, chill out!" when "1, 2, 3" "Whatever." when "4?" "Sure." when "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?\nno" "Whatever." when "I HATE YOU" "Whoa, chill out!" when "Ending with ? means a question." "Whatever." when "Wait! Hang on. Are you going to be OK?" "Sure." when "" "Fine. Be that way!" when " " "Fine. Be that way!" when " " "Fine. Be that way!" end

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Iteration #3 class Bob def hey(input) case input when "Tom-ay-to, tom-aaaah-to.", "Let's go make out behind the gym! "Whatever." when "WATCH OUT!", "WHAT THE HELL WERE YOU THINKING?", "1, 2, 3 GO! "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?", "You are, wha "Sure." when "", " ", " " "Fine. Be that way!" end end end

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Iteration #3 ic chamber make me look fat?\nno", "Ending with ? means a question."

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there I fixed it!

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take-away #3

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take-away #3 don’t repeat yourself (DRY)

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Iteration #4 class Bob def hey(input) case input when "Tom-ay-to, tom-aaaah-to.", "Let's go make out behind the gym! "Whatever." when "WATCH OUT!", "WHAT THE HELL WERE YOU THINKING?", "1, 2, 3 GO! "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?", "You are, wha "Sure." when "", " ", " " "Fine. Be that way!" end end end

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Iteration #4 class Bob def hey(input) case input when "Tom-ay-to, tom-aaaah-to.", "Let's go make out behind the gym!", "It's OK if you don't want to go to the DMV.", "1, 2, 3", "Does this cryogenic chamber make me look fat?\nno", "Ending with ? means a question." "Whatever." when "WATCH OUT!", "WHAT THE HELL WERE YOU THINKING?", "1, 2, 3 GO!", "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!", "I HATE YOU" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?", "You are, what, like 15?", "4?", "Wait! Hang on. Are you going to be OK?" "Sure." when "", " ", " " "Fine. Be that way!" end end end

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Iteration #4 "Sure." when "", " ", " " "Fine. Be that way!" end end end

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Iteration #4 "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?", "You are, what, like 15?", "4?", "Wait! Hang on. Are you going to be OK?" "Sure." when "",

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Iteration #4 "Whatever." when "WATCH OUT!", "WHAT THE HELL WERE YOU THINKING?", "1, 2, 3 GO!", "ZOMG THE %^*@#$(*^ ZOMBIES ARE COMING!!11!!1!", "I HATE YOU" "Whoa, chill out!" when "Does this cryogenic chamber make me look fat?",

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Iteration #4 case input when "Tom-ay-to, tom-aaaah-to.", "Let's go make out behind the gym!", "It's OK if you don't want to go to the DMV.", "1, 2, 3", "Does this cryogenic chamber make me look fat?\nno", "Ending with ? means a question." "Whatever." when "WATCH OUT!",

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Iteration #5 class Bob def hey(input) return "Whoa, chill out!" if input =~ /\A[\dA-Z\s\W]+\z/ and input =~ /[A-Z]/ return "Sure." if input.split("").last == "?" return "Fine. Be that way!" if input.strip == "" "Whatever." end end

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take-away #4

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take-away #4 find the abstraction

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Iteration #5 class Bob def hey(input) return "Whoa, chill out!" if input =~ /\A[\dA-Z\s\W]+\z/ and input =~ /[A-Z]/ return "Sure." if input.split("").last == "?" return "Fine. Be that way!" if input.strip == "" "Whatever." end end

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Iteration #5 class Bob def hey(input) return "Whoa, chill out!" if input =~ /\A[\dA-Z\s\W]+\z/ and input =~ /[A-Z]/ return "Sure." if input.split("").last == "?" return "Fine. Be that way!" if input.strip == "" "Whatever." end end

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Iteration #5 input =~ /\A[\dA-Z\s\W]+\z/ and input =~ /[A-Z]/

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input == input.upcase Iteration #5

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input == input.upcase and input != input.downcase Iteration #5

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Iteration #5 class Bob def hey(input) return "Whoa, chill out!" if input == input.upcase and input != input.downcase return "Sure." if input.split("").last == "?" return "Fine. Be that way!" if input.strip == "" "Whatever." end end

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Iteration #5 input.split("").last == "?"

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Iteration #5 input.end_with?("?")

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Iteration #5 class Bob def hey(input) return "Whoa, chill out!" if input == input.upcase and input != input.downcase return "Sure." if input.end_with?("?") return "Fine. Be that way!" if input.strip == "" "Whatever." end end

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Iteration #5 input.strip == ""

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input.strip.empty? Iteration #5

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take-away #5

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take-away #5 seek fluency

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Iteration #6 class Bob def hey(input) return "Whoa, chill out!" if input == input.upcase and input != input.downcase return "Sure." if input.end_with?("?") return "Fine. Be that way!" if input.strip.empty? "Whatever." end end

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input == input.upcase and input != input.downcase So expressive!

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and control flow operator

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&& boolean operator

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boolean vs control flow hungry? && thirsty?

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rich? && famous? boolean vs control flow

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sing and dance boolean vs control flow

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rise and shine boolean vs control flow

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boolean vs control flow if hungry? && thirsty? eat and drink and be_merry! end

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Iteration #6 class Bob def hey(input) return "Whoa, chill out!" if input == input.upcase and input != input.downcase return "Sure." if input.end_with?("?") return "Fine. Be that way!" if input.strip.empty? "Whatever." end end

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Iteration #6 class Bob def hey(input) return "Whoa, chill out!" if input == input.upcase && input != input.downcase return "Sure." if input.end_with?("?") return "Fine. Be that way!" if input.strip.empty? "Whatever." end end

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take-away #6

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take-away #6 familiar isn’t always correct

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Iteration #7 class Bob def hey(input) return "Whoa, chill out!" if input == input.upcase && input != input.downcase return "Sure." if input.end_with?("?") return "Fine. Be that way!" if input.strip.empty? "Whatever." end end

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Iteration #7 class Bob def hey(input) return "Whoa, chill out!" if input == input.upcase && input != input.downcase return "Sure." if input.end_with?("?") return "Fine. Be that way!" if input.strip.empty? "Whatever." end end

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Iteration #7 class Bob def hey(input) case when input == input.upcase && input != input.downcase "Whoa, chill out!" when input.end_with?("?") "Sure." when input.strip.empty? "Fine. Be that way!" else "Whatever." end end end

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take-away #7

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take-away #7 shorter is better, unless it means something else

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Iteration #8 class Bob def hey(input) case when input == input.upcase && input != input.downcase "Whoa, chill out!" when input.end_with?("?") "Sure." when input.strip.empty? "Fine. Be that way!" else "Whatever." end end end

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Iteration #8 class Bob def hey(input) @input = input case when all_caps? then "Whoa, chill out!" when question? then "Sure." when empty? then "Fine. Be that way!" else "Whatever." end end def empty? @input.strip.empty? end def question? @input.end_with?("?") end def all_caps? @input == @input.upcase && @input != @input.downcase end end

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a what-now? all_caps? question? empty?

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a what-now? all_caps? question? empty? ➔ shout?

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a what-now? all_caps? question? empty? ➔ shout? ➔ silence?

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a what-now? shout? question? silence?

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take-away #8

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take-away #8 hide the fiddly details

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Iteration #9 class Bob def hey(input) @input = input case when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end def silence? @input.strip.empty? end def question? @input.end_with?("?") end def shout? @input == @input.upcase && @input != @input.downcase end end

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Iteration #9 class Bob def hey(input) @input = input case when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end def silence? @input.strip.empty? end def question? @input.end_with?("?") end def shout? @input == @input.upcase && @input != @input.downcase end end

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Iteration #9 class Bob def hey(input) @input = input case when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end def silence? @input.strip.empty? end def question? @input.end_with?("?") end def shout? @input == @input.upcase && @input != @input.downcase end end

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Iteration #9 class Bob def hey(input) @input = input case when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end def silence? @input.strip.empty? end def question? @input.end_with?("?") end def shout? @input == @input.upcase && @input != @input.downcase end end

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Iteration #9 class Bob def hey(input) @input = input case when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end def silence? @input.strip.empty? end def question? @input.end_with?("?") end def shout? @input == @input.upcase && @input != @input.downcase end end

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Iteration #9 class Bob def hey(input) @input = input case when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end def silence? @input.strip.empty? end def question? @input.end_with?("?") end def shout? @input == @input.upcase && @input != @input.downcase end end

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Iteration #9 class Bob def hey(input) @input = input case when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end private def silence? @input.strip.empty? end def question? @input.end_with?("?") end def shout? @input == @input.upcase && @input != @input.downcase end end

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take-away #9

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take-away #9 make the public API coherent

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Iteration #10 class Bob def hey(input) @input = input case when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end private def silence? @input.strip.empty? end def question? @input.end_with?("?") end def shout? @input == @input.upcase && @input != @input.downcase end end

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Iteration #10 class Bob def hey(input) @input = input case when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end private def silence? @input.strip.empty? end def question? @input.end_with?("?") end def shout? @input == @input.upcase && @input != @input.downcase end end

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Iteration #10 class Bob def hey(input) @input = input case when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end private attr_reader :input def silence? input.strip.empty? end def question? input.end_with?("?") end def shout? input == input.upcase && input != input.downcase end end

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take-away #10

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take-away #10 send a message

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Iteration #11 class Bob def hey(input) @input = input case when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end private attr_reader :input def silence? input.strip.empty? end def question? input.end_with?("?") end def shout? input == input.upcase && input != input.downcase end end

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confusion ensues B A

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confusion ensues B A "ARE YOU CRAZY?"

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"ARE YOU CRAZY?" @input confusion ensues B A "ARE YOU CRAZY?"

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"ARE YOU CRAZY?" @input confusion ensues B A "ARE YOU CRAZY?" C "You’re late."

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@input "You’re late." confusion ensues B A "ARE YOU CRAZY?" C "You’re late."

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confusion ensues B A

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@input "You’re late." confusion ensues B A

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@input "You’re late." confusion ensues "Whatever." B A

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private attr_reader :input def silence? input.strip.empty? end ... Iteration #11

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private attr_reader :input def silence? input.strip.empty? end ... Iteration #11 private def silence? ->(s) { s.strip.empty? } end ...

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take-away #11

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take-away #11 fleeting state doesn’t belong in instance variables

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Iteration #12 class Bob def hey(input) case input when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end private def silence? ->(s) { s.strip.empty? } end def question? ->(s) { s.end_with?("?") } end def shout? ->(s) { s == s.upcase && s != s.downcase } end end

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special case case age when ->(i) { i < 13 } then "kiddo" when ->(i) { i % 25 == 0 } then "quarter" when ->(i) { i % 10 == 0 } then "decade" end

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Iteration #12 class Bob def hey(input) case input when shout? then "Whoa, chill out!" when question? then "Sure." when silence? then "Fine. Be that way!" else "Whatever." end end private def silence? ->(s) { s.strip.empty? } end def question? ->(s) { s.end_with?("?") } end def shout? ->(s) { s == s.upcase && s != s.downcase } end end

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truth def question? ->(s) { s.end_with?("?") } end

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Proc.new{ false } truth

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truth

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!!Proc.new{ false } # => true truth

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private def silence? ->(s) { s.strip.empty? } end def question? ->(s) { s.end_with?("?") } end def shout? ->(s) { s == s.upcase && s != s.downcase } end Iteration #12

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private def silence? ->(s) { s.strip.empty? } end def question? ->(s) { s.end_with?("?") } end def shout? ->(s) { s == s.upcase && s != s.downcase } end Iteration #12 private def silence?(s) s.strip.empty? end def question?(s) s.end_with?("?") end def shout?(s) s == s.upcase && s != s.downcase end

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take-away #12

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take-away #12 don’t lie

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Iteration #13 class Bob def hey(input) case when shout?(input) then "Whoa, chill out!" when question?(input) then "Sure." when silence?(input) then "Fine. Be that way!" else "Whatever." end end private def silence?(s) s.strip.empty? end def question?(s) s.end_with?("?") end def shout?(s) s == s.upcase && s != s.downcase end end

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Iteration #13 class Bob def hey(input) case when shout?(input) then "Whoa, chill out!" when question?(input) then "Sure." when silence?(input) then "Fine. Be that way!" else "Whatever." end end private def silence?(s) s.strip.empty? end def question?(s) s.end_with?("?") end def shout?(s) s == s.upcase && s != s.downcase end end

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Iteration #13 class Bob def hey(input) case when shout?(input) then "Whoa, chill out!" when question?(input) then "Sure." when silence?(input) then "Fine. Be that way!" else "Whatever." end end private def silence?(s) s.strip.empty? end def question?(s) s.end_with?("?") end def shout?(s) s == s.upcase && s != s.downcase end end

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Iteration #13 class Bob def hey(input) case when shout?(input) then "Whoa, chill out!" when question?(input) then "Sure." when silence?(input) then "Fine. Be that way!" else "Whatever." end end private def silence?(s) s.strip.empty? end def question?(s) s.end_with?("?") end def shout?(s) s == s.upcase && s != s.downcase end end

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Iteration #13 class Bob def hey(input) case when input.shout? then "Whoa, chill out!" when input.question? then "Sure." when input.silence? then "Fine. Be that way!" else "Whatever." end end end class String def silence? strip.empty? end def question? end_with?("?") end def shout? self == upcase && self != downcase end end

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take-away #13

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take-away #13 make your objects cohesive

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Iteration #14 class Bob def hey(input) case when input.shout? then "Whoa, chill out!" when input.question? then "Sure." when input.silence? then "Fine. Be that way!" else "Whatever." end end end class String def silence? strip.empty? end def question? end_with?("?") end def shout? self == upcase && self != downcase end end

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String API

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String API #downcase #gsub #reverse #scan #squeeze #to_i ...

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String API #downcase #gsub #reverse #scan #squeeze #to_i ... #question? #shout? #silence?

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Iteration #14 class Bob def hey(input) case when input.shout? then "Whoa, chill out!" when input.question? then "Sure." when input.silence? then "Fine. Be that way!" else "Whatever." end end end class String def silence? strip.empty? end def question? end_with?("?") end def shout? self == upcase && self != downcase end end

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Iteration #14 class Bob def hey(input) input = Input.new(input) case when input.shout? then "Whoa, chill out!" when input.question? then "Sure." when input.silence? then "Fine. Be that way!" else "Whatever." end end end class Input < String def silence? strip.empty? end def question? end_with?("?") end def shout? self == upcase && self != downcase end end

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take-away #14

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take-away #14 no, really, make ALL your objects cohesive

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Iteration #15 class Bob def hey(input) input = Input.new(input) case when input.shout? then "Whoa, chill out!" when input.question? then "Sure." when input.silence? then "Fine. Be that way!" else "Whatever." end end end class Input < String def silence? strip.empty? end def question? end_with?("?") end def shout? self == upcase && self != downcase end end

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Input API #downcase #gsub #reverse #scan #squeeze #to_i ... #question? #shout? #silence?

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class DazzlingString < String def sparkle "**;* #{self} **;**" end end beware!

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s = DazzlingString.new("unicorn") beware!

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beware!

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beware! s.sparkle # => **;* unicorn **;**

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beware! s.sparkle # => **;* unicorn **;** s.upcase # => UNICORN

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beware! s.sparkle # => **;* unicorn **;** s.upcase # => UNICORN s << 's' # => "unicorns"

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beware! s.sparkle # => **;* unicorn **;** s.upcase # => UNICORN s << 's' # => "unicorns" s.sparkle # => **;* unicorns **;**

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beware!

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s1 = DazzlingString.new("unicorn") beware!

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s1 = DazzlingString.new("unicorn") s2 = DazzlingString.new("rainbow") beware!

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beware!

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s1.sparkle # => **;* unicorn **;** s2.sparkle # => **;* rainbow **;** beware!

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beware!

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beware! s3 = s1 + s2 # => "unicornrainbow"

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beware! s3.sparkle # => undefined method `sparkle' for "unicornrainbow":String (NoMethodError) s3 = s1 + s2 # => "unicornrainbow"

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Iteration #15 class Bob # ... end class Input < String def silence? strip.empty? end def question? end_with?("?") end def shout? self == upcase && self != downcase end end

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Iteration #15 class Bob # ... end class Input attr_reader :input def initialize(input) @input = input end def silence? input.strip.empty? end def question? input.end_with?("?") end def shout? input == input.upcase && input != input.downcase end end

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Input API #question? #shout? #silence?

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Input API #question? #shout? #silence? #downcase #gsub #reverse #scan #squeeze #to_i ...

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take-away #15

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take-away #15 no, really, seriously, f’reals make your objects cohesive

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Iteration #16 class Bob def hey(input) input = Input.new(input) case # ... end end end class Input attr_reader :input def initialize(input) @input = input end def silence? input.strip.empty? end def question? input.end_with?("?") end def shout? input == input.upcase && input != input.downcase end end

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Iteration #16 class Bob def hey(input) input = Input.new(input) case # ... end end end class Input attr_reader :input def initialize(input) @input = input end def silence? input.strip.empty? end def question? input.end_with?("?") end def shout? input == input.upcase && input != input.downcase end end

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naming class String # ... end

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naming class Input # ... end

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naming class Analyzer # ... end

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naming class Parser # ... end

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naming class Classifier # ... end

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naming class Message # ... end

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naming class Comment # ... end

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naming class Statement # ... end

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naming class Utterance # ... end

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naming class Confrontation # ... end

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naming class Drivel # ... end

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naming class Blathering # ... end

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naming class Interpretation # ... end

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naming class Tone # ... end

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naming class Perception # ... end

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point of view shout? question? silence?

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point of view shout? question? silence? ➔ freaking_out? ➔ dumb_question? ➔ cold_shoulder?

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naming class Remark # ... end

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Iteration #16 class Bob def hey(remark) remark = Remark.new(remark) case # ... end end end class Remark attr_reader :remark def initialize(remark) @remark = remark end def silence? remark.strip.empty? end def question? remark.end_with?("?") end def shout? remark == remark.upcase && remark != remark.downcase end end

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Iteration #16 class Bob def hey(remark) remark = Remark.new(remark) case # ... end end end class Remark attr_reader :remark def initialize(remark) @remark = remark end def silence? remark.strip.empty? end def question? remark.end_with?("?") end def shout? remark == remark.upcase && remark != remark.downcase end end

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echoes remark = Remark.new(remark) remark.remark

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echoes host = host.host if host.host?

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echoes member.member.member

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echoes var srcData = data; if (data.data && data.data.data) { data = data.data.data; } else if (data.data) { data = data.data; } if (!data) { return; }

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echoes remark = Remark.new(remark) remark.remark

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echoes remark = Remark.new(text) remark.text

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take-away #16

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take-away #16 naming is hard

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Final Solution class Bob def hey(text) remark = Remark.new(text) case # ... end end end class Remark attr_reader :text def initialize(text) @text = text end def silence? text.strip.empty? end def question? text.end_with?("?") end def shout? text == text.upcase && text != text.downcase end end case when remark.shout? then "Whoa, chill out!" when remark.question? then "Sure." when remark.silence? then "Fine. Be that way!" else "Whatever." end

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class Bob def hey (input ) if input=="Tom-ay-to, tom-aaaah-to." return"Whatever." elsif input == "WATCH OUT!" return "Whoa, chill out!" elsif input == "Does this cryogenic chamber make me look fat?" return "Sure." elsif input== "You are, what, like 15?" return "Sure." elsif input == "Let's go make out behind the gym!" return "Whatever." elsif input == "It's OK if you don't want to go to the DMV." return "Whatever." Initial Solution

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practice toy problems

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<3 thank you

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credits Simple Made Easy http://www.infoq.com/presentations/Simple-Made-Easy Rich Hickey 5 elements of Effective Thinking Michael Starbird, Edward Burger Smalltalk Implementation Patterns Kent Beck Mark by Mark http://vimeo.com/79530470 Sarah Gray

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The Devil is in the Details Katrina Owen @kytrinyx http://exercism.io