Module: Capistrano::ProcHelpers

Included in:
Configuration::ValidatedVariables, Configuration::Variables
Defined in:
lib/capistrano/proc_helpers.rb

Class Method Summary collapse

Class Method Details

.callable_without_parameters?(x) ⇒ Boolean

Tests whether the given object appears to respond to ‘call` with zero parameters. In Capistrano, such a proc is used to represent a “deferred value”. That is, a value that is resolved by invoking `call` at the time it is first needed.

Returns:

  • (Boolean) 


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# File 'lib/capistrano/proc_helpers.rb', line 9

def callable_without_parameters?(x)
  x.respond_to?(:call) && (!x.respond_to?(:arity) || x.arity.zero?)
end