4 module Puppet::Parser::Functions
5 newfunction(:flatten, :type => :rvalue, :doc => <<-DOC
7 This function flattens any deeply nested arrays and returns a single flat array
11 convert nested arrays into a single flat array
13 @example Example usage
15 flatten(['a', ['b', ['c']]])` returns: `['a','b','c']
17 > **Note:** **Deprecated** from Puppet 5.5.0, this function has been replaced with a
18 built-in [`flatten`](https://puppet.com/docs/puppet/latest/function.html#flatten) function.
22 raise(Puppet::ParseError, "flatten(): Wrong number of arguments given (#{arguments.size} for 1)") if arguments.size != 1
26 unless array.is_a?(Array)
27 raise(Puppet::ParseError, 'flatten(): Requires array to work with')
30 result = array.flatten
36 # vim: set ts=2 sw=2 et :