enumeration.md

Enumeration

People should understand the concept of looping/enumerating through things. They might not know about specific loops (for/while) or about enumerating an array using a higher-order function (like each), but the general concept of stepping through an array should be familiar.

Tracks should teach the normal idiomatic ways to loop/enumerate in their language, but do not need to be exhaustive about all the possibilities (e.g. don't bother teaching for in Ruby).

Exercises

Stack of cards 2

This exercise deals with analysis on a stack of playing cards. The reference implementation (JavaScript) teaches:

• Find the index of an item in an array
• Find the index of an item matching a predicate in an array
• Test a predicate against all items in an array
  • short-circuit on one true (some)
  • short-circuit on one false (every)

Implementations

Track	Exercise	Changes
JavaScript	arrays	None