Module: Weak::Map::AbstractStrongKeys Abstract

Included in:

StrongKeys, StrongSecondaryKeys

Defined in:

lib/weak/map/abstract_strong_keys.rb

Overview

This module is abstract.

This module implements a common subset of (helper-)methods for a Weak::Map with an ObjectSpace::WeakMap with strong keys, i.e., StrongKeys and StrongSecondaryKeys.

Instance Method Summary

• #keys ⇒ Array

  An Array containing all keys of the map for which we have a valid value.

• #size ⇒ Integer

  The number of live key-value pairs in self.

• #values ⇒ Array

  An Array containing all values of the map for which we have a valid key.

Instance Method Details

#keys ⇒ Array

Note:

In contrast to a Hash, Weak::Maps do not necessarily retain insertion order.

Returns an Array containing all keys of the map for which we have a valid value. Keys with garbage-collected values are excluded.

Returns:

• (Array) —

  an Array containing all keys of the map for which we have a valid value. Keys with garbage-collected values are excluded.

See Also:

• Weak::Map#values

# File 'lib/weak/map/abstract_strong_keys.rb', line 20

def keys
  each_key.to_a
end

#size ⇒ Integer

Returns the number of live key-value pairs in self.

Returns:

• (Integer) —

  the number of live key-value pairs in self

# File 'lib/weak/map/abstract_strong_keys.rb', line 25

def size
  each_key.count
end

#values ⇒ Array

Note:

In contrast to a Hash, Weak::Maps do not necessarily retain insertion order.

Returns an Array containing all values of the map for which we have a valid key. Values with garbage-collected keys are excluded.

Returns:

• (Array) —

  an Array containing all values of the map for which we have a valid key. Values with garbage-collected keys are excluded.

See Also:

• Weak::Map#keys

# File 'lib/weak/map/abstract_strong_keys.rb', line 30

def values
  each_value.to_a
end