Don't Get Clever

Transcript

1. 1.

   Don't Get Clever Avdi Grimm

2. 2.

   Pop quiz r e q u i r e '

   p s t o r e ' s t o r e = P S t o r e . n e w ( ' d a t a . p s t o r e ' ) s t o r e . t r a n s a c t i o n ( t r u e ) d o # . . . e n d
3. 3.

   Pop quiz 2 A r r a y . i

   n s t a n c e _ m e t h o d s ( f a l s e )
4. 4.

   Symbols are truthy r e q u i r e

   ' p s t o r e ' s t o r e = P S t o r e . n e w ( ' d a t a . p s t o r e ' ) s t o r e . t r a n s a c t i o n ( : r e a d _ o n l y ) d o # . . . e n d
5. 5.

   Clever!

6. 6.

   What's : r e a d _ o n l

   y ?? s t o r e . t r a n s a c t i o n ( : r e a d _ o n l y ) d o # . . . e n d
7. 7.

   Dead end s t o r e . t r

   a n s a c t i o n ( : c h u n k y _ b a c o n ) d o # . . . e n d
8. 8.

   Negation A r r a y . i n s

   t a n c e _ m e t h o d s ( ! : i n c l u d e _ s u p e r )
9. 9.

   Don't get clever

10. 10.

    Intention-revealing argument r e a d _ o n l

    y = t r u e s t o r e . t r a n s a c t i o n ( r e a d _ o n l y ) d o # . . . e n d
11. 11.

    Intention-revealing argument i n c l u d e _

    s u p e r = f a l s e A r r a y . i n s t a n c e _ m e t h o d s ( i n c l u d e _ s u p e r )
12. 12.

    Inline version A r r a y . i n

    s t a n c e _ m e t h o d s ( i n c l u d e _ s u p e r = f a l s e )
13. 13.

    Don't get clever