Puppet Function: is_function_available

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

Summary

**Deprecated:** Determines whether the Puppet runtime has access to a function by that name.

Overview

is_function_available() ⇒ Boolean

This function accepts a string as an argument.

> *Note: *Deprecated* Will be removed in a future version of stdlib. See [`validate_legacy`](#validate_legacy).

Returns:

  • (Boolean) —

    Returns `true` or `false`



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# File 'vendor_modules/stdlib/lib/puppet/parser/functions/is_function_available.rb', line 7

newfunction(:is_function_available, type: :rvalue, doc: <<-DOC
  @summary
    **Deprecated:** Determines whether the Puppet runtime has access to a function by that name.

  This function accepts a string as an argument.

  @return [Boolean]
    Returns `true` or `false`

  > **Note:* **Deprecated** Will be removed in a future version of stdlib. See
  [`validate_legacy`](#validate_legacy).
  DOC
) do |arguments|
  if arguments.size != 1
    raise(Puppet::ParseError, "is_function_available?(): Wrong number of arguments given #{arguments.size} for 1")
  end

  # Only allow String types
  return false unless arguments[0].is_a?(String)

  function = Puppet::Parser::Functions.function(arguments[0].to_sym)
  function.is_a?(String) && !function.empty?
end