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_.negate

negate_.negate(predicate)
Returns a new negated version of the predicate function.

var isFalsy = _.negate(Boolean);
_.find([-2, -1, 0, 1, 2], isFalsy);
=> 0

Links:

http://underscorejs.org/index#negate

doc_Underscore

2016-04-09 09:05:30

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