Puppet Function: union

Defined in:
puppet/modules/stdlib/lib/puppet/parser/functions/union.rb
Function type:
Ruby 3.x API

Overview

union() ⇒ Any

This function returns a union of two or more arrays.

Examples:

union(["a","b","c"],["b","c","d"])

Would return: [“a”,“b”,“c”,“d”]

Returns:

  • (Any) 


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# File 'puppet/modules/stdlib/lib/puppet/parser/functions/union.rb', line 6

newfunction(:union, :type => :rvalue, :doc => <<-EOS
This function returns a union of two or more arrays.

*Examples:*

  union(["a","b","c"],["b","c","d"])

Would return: ["a","b","c","d"]
  EOS
) do |arguments|

  # Check that 2 or more arguments have been given ...
  raise(Puppet::ParseError, "union(): Wrong number of arguments " +
    "given (#{arguments.size} for < 2)") if arguments.size < 2

  arguments.each do |argument|
    raise(Puppet::ParseError, 'union(): Every parameter must be an array') unless argument.is_a?(Array)
  end

  arguments.reduce(:|)
end