property_.property(key) Returns a function that will itself return the key property of any passed-in object.

isEmpty_.isEmpty(object) Returns true if an enumerable object contains no values (no enumerable own-properties). For

isFunction_.isFunction(object) Returns true if object is a Function.

propertyOf_.propertyOf(object) Inverse of _.property. Takes an object and returns a function which will return the value

defaults_.defaults(object, *defaults) Fill in undefined properties in object with the first value present in the

extend_.extend(destination, *sources) Copy all of the properties in the source objects over to the destination

matcher_.matcher(attrs) Alias: matches Returns a predicate function that will tell you if a passed

clone_.clone(object) Create a shallow-copied clone of the provided plain object. Any nested objects or arrays will

extendOwn_.extendOwn(destination, *sources) Alias: assign Like extend, but only copies own

isMatch_.isMatch(object, properties) Tells you if the keys and values in properties are contained in object.