delete_if()
Calls the given block once for each key, value pair in the database. Deletes all entries for which the block returns true.
Returns self.
# File lib/yaml/dbm.rb, line 84 def delete_if # :yields: [key, value] del_keys = keys.dup del_keys.delete_if { |k| yield( k, fetch( k ) ) == false } del_keys.each { |k| delete( k ) } self end