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var arrayMap = require('./_arrayMap'),
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    baseIteratee = require('./_baseIteratee'),
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    baseMap = require('./_baseMap'),
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    isArray = require('./isArray');
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/**
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 * Creates an array of values by running each element in `collection` thru
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 * `iteratee`. The iteratee is invoked with three arguments:
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 * (value, index|key, collection).
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 *
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 * Many lodash methods are guarded to work as iteratees for methods like
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 * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
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 *
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 * The guarded methods are:
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 * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
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 * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
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 * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
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 * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
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 *
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 * @static
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 * @memberOf _
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 * @since 0.1.0
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 * @category Collection
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 * @param {Array|Object} collection The collection to iterate over.
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 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
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 * @returns {Array} Returns the new mapped array.
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 * @example
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 *
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 * function square(n) {
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 *   return n * n;
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 * }
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 *
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 * _.map([4, 8], square);
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 * // => [16, 64]
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 *
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 * _.map({ 'a': 4, 'b': 8 }, square);
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 * // => [16, 64] (iteration order is not guaranteed)
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 *
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 * var users = [
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 *   { 'user': 'barney' },
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 *   { 'user': 'fred' }
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 * ];
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 *
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 * // The `_.property` iteratee shorthand.
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 * _.map(users, 'user');
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 * // => ['barney', 'fred']
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 */
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function map(collection, iteratee) {
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  var func = isArray(collection) ? arrayMap : baseMap;
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  return func(collection, baseIteratee(iteratee, 3));
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}
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module.exports = map;
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