[ddfreyne]

A small mistake: “In Ruby, these functions are map, filter” — is incorrect; filter in Ruby is called select.

[biesnecker]

Cheers, fixed (as soon as the cache updates)

[charliesome]

Also Ruby has 'reduce' as a synonym for 'inject'

[gingerlime]

...and thank god for that. I find inject a really confusing name.

[gnaritas]

The Ruby names are copied from Smalltalk, as is much of Ruby.

[talaketu]

Also: (++) :: [a] -> [a] -> [a]

Article implies: (++) :: [a] -> a -> [a]