`list`

List predicates.

| Availability: | logtalk_load(types(loader))

| Author: Paulo Moura | Version: 4:5:0 | Date: 2026-08-05

| Compilation flags: | static, context_switching_calls

| Implements: | public :ref:`listp <listp/0>` | Extends: | public :ref:`compound <compound/0>`

| Remarks:

Portability notes: This object will use the backend Prolog system msort/2 and sort/4 built-in predicates when available.

| Inherited public predicates: | Â :ref:comparingp/0::(<)/2 Â :ref:comparingp/0::(=:=)/2 Â :ref:comparingp/0::(=<)/2 Â :ref:comparingp/0::(=\=)/2 Â :ref:comparingp/0::(>)/2 Â :ref:comparingp/0::(>=)/2 Â :ref:listp/0::append/2 Â :ref:listp/0::append/3 Â :ref:termp/0::check/1 Â :ref:listp/0::delete/3 Â :ref:listp/0::delete_matches/3 Â :ref:termp/0::depth/2 Â :ref:listp/0::drop/3 Â :ref:listp/0::empty/1 Â :ref:listp/0::flatten/2 Â :ref:termp/0::ground/1 Â :ref:listp/0::hamming_distance/3 Â :ref:listp/0::keysort/2 Â :ref:listp/0::last/2 Â :ref:listp/0::length/2 Â :ref:listp/0::max/2 Â :ref:listp/0::member/2 Â :ref:listp/0::memberchk/2 Â :ref:listp/0::min/2 Â :ref:listp/0::msort/2 Â :ref:listp/0::msort/3 Â :ref:termp/0::new/1 Â :ref:listp/0::nextto/3 Â :ref:listp/0::nth0/3 Â :ref:listp/0::nth0/4 Â :ref:listp/0::nth1/3 Â :ref:listp/0::nth1/4 Â :ref:termp/0::numbervars/1 Â :ref:termp/0::numbervars/3 Â :ref:listp/0::occurrences/2 Â :ref:listp/0::occurrences/3 Â :ref:termp/0::occurs/2 Â :ref:listp/0::partition/5 Â :ref:listp/0::permutation/2 Â :ref:listp/0::prefix/2 Â :ref:listp/0::prefix/3 Â :ref:listp/0::proper_prefix/2 Â :ref:listp/0::proper_prefix/3 Â :ref:listp/0::proper_suffix/2 Â :ref:listp/0::proper_suffix/3 Â :ref:listp/0::remove_duplicates/2 Â :ref:listp/0::reverse/2 Â :ref:listp/0::same_length/2 Â :ref:listp/0::same_length/3 Â :ref:listp/0::select/3 Â :ref:listp/0::select/4 Â :ref:listp/0::selectchk/3 Â :ref:listp/0::selectchk/4 Â :ref:listp/0::sequential_occurrences/2 Â :ref:listp/0::sequential_occurrences/3 Â :ref:termp/0::singletons/2 Â :ref:listp/0::sort/2 Â :ref:listp/0::sort/3 Â :ref:listp/0::sort/4 Â :ref:listp/0::split/4 Â :ref:listp/0::sublist/2 Â :ref:listp/0::subsequence/3 Â :ref:listp/0::subsequence/4 Â :ref:listp/0::substitute/4 Â :ref:termp/0::subsumes/2 Â :ref:termp/0::subterm/2 Â :ref:listp/0::subtract/3 Â :ref:listp/0::suffix/2 Â :ref:listp/0::suffix/3 Â :ref:listp/0::take/3 Â :ref:listp/0::take/4 Â :ref:termp/0::valid/1 Â :ref:termp/0::variables/2 Â :ref:termp/0::variant/2 Â :ref:termp/0::varnumbers/2 Â :ref:termp/0::varnumbers/3 Â

.. contents:: :local: :backlinks: top

Public predicates

.. index:: as_difflist/2 .. _list/0::as_difflist/2:

as_difflist/2 ^^^^^^^^^^^^^^^^^

Converts a list to a difference list.

| Compilation flags: | static

| Template: | as_difflist(List,Diffist) | Mode and number of proofs: | as_difflist(+list,-difference_list) - one

Protected predicates

(no local declarations; see entity ancestors if any)

Private predicates

(no local declarations; see entity ancestors if any)

Operators

(none)

.. seealso::

:ref:`list(Type) <list/1>`, :ref:`numberlist <numberlist/0>`, :ref:`varlist <varlist/0>`, :ref:`difflist <difflist/0>`