mixins/pair_enumerable_container

module PairEnumerableContainer

A mixin for containers that have key/value pairs. This mixin defines a number of useful functions for such containers. The container must have an each_pair() method that yields key/value pairs and a fetch() method that operates just like Hash#fetch().

Public Methods

has_value?(value)

Determine if a container contains an element with a given value.

value	the value to search for.

Returns: true if the value was found, false otherwise.

value?

value? is an alias for has_value?.

has_key?(key)

Determine if a container contains an element with a given key.

key	the key to search for.

Returns: true if the key was found, false otherwise.

include?

include? is an alias for has_key?.

key?

key? is an alias for has_key?.

member?

member? is an alias for has_key?.

each_key()

Returns: the last value from yield.

each_value()

Iterate through all the values in the container, in order.

Returns: the last value from the yield.

keys()

Create an array populated with all the keys in the container.

Returns: an array containing all the keys in the container.

values()

Create an array populated with all the values in the container.

Returns: an array containing all the values in the container.

Requires