module Puppet::Parser::Functions
newfunction(:intersection, :type => :rvalue, :doc => <<-EOS
-This function returns an array an intersection of two.
+This function returns an array of the intersection of two.
*Examples:*
- intersection(["a","b","c"],["b","c","d"])
+ intersection(["a","b","c"],["b","c","d"]) # returns ["b","c"]
+ intersection(["a","b","c"],[1,2,3,4]) # returns [] (true, when evaluated as a Boolean)
-Would return: ["b","c"]
EOS
) do |arguments|
# Two arguments are required
- raise(Puppet::ParseError, "intersection(): Wrong number of arguments " +
- "given (#{arguments.size} for 2)") if arguments.size != 2
+ raise(Puppet::ParseError, "intersection(): Wrong number of arguments given (#{arguments.size} for 2)") if arguments.size != 2
first = arguments[0]
second = arguments[1]