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+var arrayEvery = require('../internal/arrayEvery'),
+ baseCallback = require('../internal/baseCallback'),
+ baseEvery = require('../internal/baseEvery'),
+ isArray = require('../lang/isArray'),
+ isIterateeCall = require('../internal/isIterateeCall');
+
+/**
+ * Checks if `predicate` returns truthy for **all** elements of `collection`.
+ * The predicate is bound to `thisArg` and invoked with three arguments:
+ * (value, index|key, collection).
+ *
+ * If a property name is provided for `predicate` the created `_.property`
+ * style callback returns the property value of the given element.
+ *
+ * If a value is also provided for `thisArg` the created `_.matchesProperty`
+ * style callback returns `true` for elements that have a matching property
+ * value, else `false`.
+ *
+ * If an object is provided for `predicate` the created `_.matches` style
+ * callback returns `true` for elements that have the properties of the given
+ * object, else `false`.
+ *
+ * @static
+ * @memberOf _
+ * @alias all
+ * @category Collection
+ * @param {Array|Object|string} collection The collection to iterate over.
+ * @param {Function|Object|string} [predicate=_.identity] The function invoked
+ * per iteration.
+ * @param {*} [thisArg] The `this` binding of `predicate`.
+ * @returns {boolean} Returns `true` if all elements pass the predicate check,
+ * else `false`.
+ * @example
+ *
+ * _.every([true, 1, null, 'yes'], Boolean);
+ * // => false
+ *
+ * var users = [
+ * { 'user': 'barney', 'active': false },
+ * { 'user': 'fred', 'active': false }
+ * ];
+ *
+ * // using the `_.matches` callback shorthand
+ * _.every(users, { 'user': 'barney', 'active': false });
+ * // => false
+ *
+ * // using the `_.matchesProperty` callback shorthand
+ * _.every(users, 'active', false);
+ * // => true
+ *
+ * // using the `_.property` callback shorthand
+ * _.every(users, 'active');
+ * // => false
+ */
+function every(collection, predicate, thisArg) {
+ var func = isArray(collection) ? arrayEvery : baseEvery;
+ if (thisArg && isIterateeCall(collection, predicate, thisArg)) {
+ predicate = undefined;
+ }
+ if (typeof predicate != 'function' || thisArg !== undefined) {
+ predicate = baseCallback(predicate, thisArg, 3);
+ }
+ return func(collection, predicate);
+}
+
+module.exports = every;