Associative Array Comprehension

[goretkin]

Something like Python's http://www.python.org/dev/peps/pep-0274/

[binarybana]

It looks like the following syntax was popular on the Google groups thread: https://groups.google.com/forum/?fromgroups=#!topic/julia-dev/NWZZ5eOgLhc

{ k(x) => v(x) for x in a }