jashkenas/underscore — pull request #1710 by megawac (2014-06-28 03:31:21+00:00)
Title: Apply boiler to some and every; simplify each

Similar to #1708. Still not sure if I like this pattern, but it definitely has some benefits.

post-some: http://jsperf.com/pr-1689/8
post-each: http://jsperf.com/pr-1689/11