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module Puppet::Parser::Functions
newfunction(:has_element, :type => :rvalue, :doc => <<-'ENDHEREDOC') do |args|
Determine if an array has an element with a matching value.
Example:
$my_array = ['key_one']
if has_element($my_array, 'key_two') {
notice('we will not reach here')
}
if has_element($my_array, 'key_one') {
notice('this will be printed')
}
ENDHEREDOC
unless args.length == 2
raise Puppet::ParseError, ("has_element(): wrong number of arguments (#{args.length}; must be 2)")
end
unless args[0].is_a?(Array)
raise Puppet::ParseError, "has_element(): expects the first argument to be an array, got #{args[0].inspect} which is of type #{args[0].class}"
end
args[0].include?(args[1])
end
end
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