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Go Types Startup Edmonton Hack Day Saturday, May 9, 2015

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Today ✴ Variables ✴ Declare, Initialize, Assign ✴ Strong and Static Typing ✴ Type Inference ✴ Scope ✴ Numeric Types

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play.golang.org

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Nathan Youngman @nathany ✓ JavaScript ✓ PHP ✓ Python ✓ Ruby ✓ C ✓ Java ✓ Go

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Static types, strong types Weak Strong Dynamic JavaScript PHP Python
 Ruby Static C Java
 C# Go

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play.golang.org package main
 
 import "fmt"
 
 func main() {
 var name string
 name = "Kim"
 fmt.Println("Hello", name)
 }

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play.golang.org package main
 
 import "fmt"
 
 func main() {
 var a int
 a, b := 1, 2
 fmt.Println(a, b)
 }


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play.golang.org package main
 
 import "fmt"
 
 func main() {
 a, op, b := 1, "+", 2
 
 var result int
 if op == "+" {
 result = a + b
 }
 fmt.Println(result)
 }

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Numeric types Signed Minimum Maximum int8 -128 127 int16 -32768 32767 int32 -2147483648 2147483647 int64 -9223372036854775808 9223372036854775807 Unsigned Minimum Maximum uint8 0 255 uint16 0 65535 uint32 0 4294967295 uint64 0 18446744073709551615

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Numeric types Floating point IEEE-754 ~ Minimum ~ Maximum float32 -1038 1038 float64 -10308 10308

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Nathan Youngman @nathany speakerdeck.com/nathany