PHP Closures - Lightning Talk

Lightning talk about Closures given on September 12th, 2013, to the Seattle PHP User Group.

Transcript

1. Closures! A lightning talk by Jeremy Lindblom! <?  
2. What are Closures?! Closure anatomy! Closures in objects! Objects as Closures!
3. A Closure is an object! that represents an! anonymous function.!
4. They're anonymous because they don't have a name.!
5. They are also called lambdas, or lambda functions.! ! This is a reference to a branch of mathematics called lambda calculus.! Let's not even go there.!
6. Named functions have names so they can be referenced and reused.! ! Anonymous functions don't need to be reused. They're great for callbacks...!
7. like when you are sorting…!
8. or mapping…!
9. or anything, really.!
10. Anatomy of a closure/lambda!
11. Basic closure syntax!
12. The use clause!
13. Recursive closures!
14. Closures in objects!
15. Closures in objects!
16. Binding!
17. Binding! Scope! Access!
18. Objects as Closures!
19. __invoke()!
20. Closures! QUESTIONS?>   <?