define(['../internal/baseCallback', '../internal/isIterateeCall'], function(baseCallback, isIterateeCall) {

/**

* Creates a function bound to an optional `thisArg`. If `func` is a property

* name the created callback returns the property value for a given element.

* If `func` is an object the created callback returns `true` for elements

* that contain the equivalent object properties, otherwise it returns `false`.

*

* @static

* @memberOf _

* @alias iteratee

* @category Utility

* @param {*} [func=_.identity] The value to convert to a callback.

* @param {*} [thisArg] The `this` binding of `func`.

* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.

* @returns {Function} Returns the callback.

* @example

*

* var users = [

* { 'user': 'barney', 'age': 36 },

* { 'user': 'fred', 'age': 40 }

* ];

*

* // wrap to create custom callback shorthands

* _.callback = _.wrap(_.callback, function(callback, func, thisArg) {

* var match = /^(.+?)__([gl]t)(.+)$/.exec(func);

* if (!match) {

* return callback(func, thisArg);

* }

* return function(object) {

* return match[2] == 'gt' ? object[match[1]] > match[3] : object[match[1]] < match[3];

* };

* });

*

* _.filter(users, 'age__gt36');

* // => [{ 'user': 'fred', 'age': 40 }]

*/

function callback(func, thisArg, guard) {

}

return callback;

});