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module Puppet::Parser::Functions
newfunction(:delete_values, :type => :rvalue, :doc => <<-EOS
Deletes all instances of a given value from a hash.
*Examples:*
delete_values({'a'=>'A','b'=>'B','c'=>'C','B'=>'D'}, 'B')
Would return: {'a'=>'A','c'=>'C','B'=>'D'}
EOS
) do |arguments|
raise(Puppet::ParseError,
"delete_values(): Wrong number of arguments given " +
"(#{arguments.size} of 2)") if arguments.size != 2
hash, item = arguments
if not hash.is_a?(Hash)
raise(TypeError, "delete_values(): First argument must be a Hash. " + \
"Given an argument of class #{hash.class}.")
end
hash.dup.delete_if { |key, val| item == val }
end
end
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