Puppet Function: delete_undef_values

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

Overview

delete_undef_values()Any

Returns a copy of input hash or array with all undefs deleted.

Examples:

$hash = delete_undef_values({a=>'A', b=>'', c=>undef, d => false})

Would return: => 'A', b => '', d => false

$array = delete_undef_values(['A','',undef,false])

Would return: ['A','',false]

Returns:

  • (Any)


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# File 'modules/stdlib/lib/puppet/parser/functions/delete_undef_values.rb', line 5

newfunction(:delete_undef_values, :type => :rvalue, :doc => <<-DOC
  Returns a copy of input hash or array with all undefs deleted.

  *Examples:*

      $hash = delete_undef_values({a=>'A', b=>'', c=>undef, d => false})

  Would return: {a => 'A', b => '', d => false}

      $array = delete_undef_values(['A','',undef,false])

  Would return: ['A','',false]

    DOC
           ) do |args|

  raise(Puppet::ParseError, "delete_undef_values(): Wrong number of arguments given (#{args.size})") if args.empty?

  unless args[0].is_a?(Array) || args[0].is_a?(Hash)
    raise(Puppet::ParseError, "delete_undef_values(): expected an array or hash, got #{args[0]} type  #{args[0].class} ")
  end
  result = args[0].dup
  if result.is_a?(Hash)
    result.delete_if { |_key, val| val.equal? :undef }
  elsif result.is_a?(Array)
    result.delete :undef
  end
  result
end