Function predicate

test/collections.js:931–931

(x)

    // Context
    var predicate = function(x){ return x === this.x; };
    assert.deepEqual(_.partition([1, 2, 3], predicate, {x: 2}), [[2], [1, 3]], 'partition takes a context argument');

    assert.deepEqual(_.partition([{a: 1}, {b: 2}, {a: 1, b: 2}], {a: 1}), [[{a: 1}, {a: 1, b: 2}], [{b: 2}]], 'predicate can be object');