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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

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.. rst-class:: align-right

built-in method

.. index:: pair: ignore/1; Built-in method .. _methods_ignore_1:

ignore/1

Description

::

ignore(Goal)

This predicate succeeds whether its argument succeeds or fails and it is not re-executable. This built-in meta-predicate is declared as a private method and thus cannot be used as a message to an object.

This meta-predicate is opaque to cuts in its argument.

Meta-predicate template

::

ignore(0)

Modes and number of proofs

::

ignore(+callable) - one

Errors

| Goal is a variable: | instantiation_error | Goal is neither a variable nor a callable term: | type_error(callable, Goal)

Examples

| Call a goal and succeeding even if it fails: | ignore(Goal) | To send a message succeeding even if it fails to :term:self: | ignore(::Goal) | To send a message succeeding even if it fails to an explicit object: | ignore(Object::Goal)

.. seealso::

:ref:methods_call_N, :ref:methods_once_1, :ref:methods_not_1