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var baseClone = require('./_baseClone'),
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    baseIteratee = require('./_baseIteratee');
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/** Used to compose bitmasks for cloning. */
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var CLONE_DEEP_FLAG = 1;
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/**
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 * Creates a function that invokes `func` with the arguments of the created
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 * function. If `func` is a property name, the created function returns the
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 * property value for a given element. If `func` is an array or object, the
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 * created function returns `true` for elements that contain the equivalent
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 * source properties, otherwise it returns `false`.
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 *
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 * @static
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 * @since 4.0.0
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 * @memberOf _
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 * @category Util
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 * @param {*} [func=_.identity] The value to convert to a callback.
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 * @returns {Function} Returns the callback.
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 * @example
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 *
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 * var users = [
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 *   { 'user': 'barney', 'age': 36, 'active': true },
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 *   { 'user': 'fred',   'age': 40, 'active': false }
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 * ];
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 *
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 * // The `_.matches` iteratee shorthand.
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 * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
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 * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
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 *
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 * // The `_.matchesProperty` iteratee shorthand.
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 * _.filter(users, _.iteratee(['user', 'fred']));
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 * // => [{ 'user': 'fred', 'age': 40 }]
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 *
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 * // The `_.property` iteratee shorthand.
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 * _.map(users, _.iteratee('user'));
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 * // => ['barney', 'fred']
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 *
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 * // Create custom iteratee shorthands.
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 * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
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 *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
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 *     return func.test(string);
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 *   };
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 * });
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 *
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 * _.filter(['abc', 'def'], /ef/);
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 * // => ['def']
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 */
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function iteratee(func) {
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  return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
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}
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module.exports = iteratee;
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