Puppet Function: delete_undef_values

Defined in:
puppet/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) 


2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
# File 'puppet/modules/stdlib/lib/puppet/parser/functions/delete_undef_values.rb', line 2

newfunction(:delete_undef_values, :type => :rvalue, :doc => <<-EOS
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]

    EOS
  ) do |args|

  raise(Puppet::ParseError,
        "delete_undef_values(): Wrong number of arguments given " +
        "(#{args.size})") if args.size < 1

  unless args[0].is_a? Array or 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