Returns true if the key was not already in the set.
Returns an iterator for the keys in the set. Remove is supported. Note that the
same iterator instan
Returns true if the key was removed.
Creates a new set identical to the specified set.
Skips checks for existing keys.
Clears the set and reduces the size of the backing arrays to be the specified
capacity if they are l
Increases the size of the backing array to accommodate the specified number of
additional items. Use