Implementations of common functional programming functions in JavaScript and Python:

• all
• any
• compose
• curry
• filter
• flatten
• flip
• group
• map
• memoize
• partial
• partition
• permutations
• pipe2
• pipe
• pipeeither
• pipemaybe
• range
• reduce
• reverse
• scan
• sort
• split
• unique
• zip
• zipwith