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13 lines
345 B
13 lines
345 B
module.exports = function (xs, fn) { |
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var res = []; |
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for (var i = 0; i < xs.length; i++) { |
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var x = fn(xs[i], i); |
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if (isArray(x)) res.push.apply(res, x); |
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else res.push(x); |
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} |
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return res; |
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}; |
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var isArray = Array.isArray || function (xs) { |
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return Object.prototype.toString.call(xs) === '[object Array]'; |
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};
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