Partial application

gistfile1.coffee

# Without partial application.
ajax.get('url', (data) ->
  map data, (item) ->
    replace item, /_/g, '-'

# With partial application.
ajax.get('url', map(replace(/_/, '-')))

#========================================

# Without partial application.
firstTwo = (words) ->
  map words, (word) ->
    first word, 2

# With partial application.
firstTwo = map(first(2))