Module: Welder::Support::CallableHandler

Included in:

Pipeline

Defined in:

lib/welder/support/callable_handler.rb

Overview

Mixin that provides several utilities to handle callable objects

Instance Method Summary

• #callable!(*lambdas) ⇒ Object

  Assert that a series of values are callable (respond to call).

Instance Method Details

#callable!(*lambdas) ⇒ Object

Assert that a series of values are callable (respond to call)

Parameters:

• lambdas (Array<*>) —

  Array of values to check

Raises:

• (CallableExpectedError) —

  If one or more of the values are not callable

# File 'lib/welder/support/callable_handler.rb', line 15

def callable!(*lambdas)
  non_callable = lambdas.reject { |lambda| lambda.respond_to?(:call) }
  unless non_callable.empty?
    raise(
      CallableExpectedError,
      "Expected #{non_callable.map(&:to_s).join(', ')} " \
  "to respond to 'call'"
    )
  end
end