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Merge pull request #1755 from triska/doc

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various smaller documentation improvements
This commit is contained in:
Mark Thom
2023-03-10 02:40:29 +01:00
committed by GitHub
parent cba09d4ea1 56bd596af3
commit ecd77f7512
1 changed files with 8 additions and 9 deletions
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11
src/lib/lists.pl
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@@ -63,18 +63,16 @@ resource_error(Resource, Context) :-
%% length(?Xs, ?N). %% length(?Xs, ?N).
% %
% Relates a list to its length (number of items). It can be used to count the elements of a current list or % Relates a list to its length (number of elements). It can be used to count the elements of a current list or
% to create a list full of free variables with N length. % to create a list full of free variables with N length.
% %
% ``` % ```
% ?- length([a,b,c], 3). % ?- length("abc", 3).
% true. % true.
% ?- length([a,b,c], N). % ?- length("abc", N).
% N = 3. % N = 3.
% ?- length(Xs, 3). % ?- length(Xs, 3).
% Xs = [_A,_B,_C]. % Xs = [_A,_B,_C].
% ?- length("chars", N).
% N = 5.
% ``` % ```
length(Xs0, N) :- length(Xs0, N) :-
@@ -133,7 +131,8 @@ member(X, [_|Xs]) :- member(X, Xs).
% %
% ``` % ```
% ?- select(c, "abcd", X). % ?- select(c, "abcd", X).
% X = "abd". % X = "abd"
% ; false.
% ``` % ```
select(X, [X|Xs], Xs). select(X, [X|Xs], Xs).
select(X, [Y|Xs], [Y|Ys]) :- select(X, Xs, Ys). select(X, [Y|Xs], [Y|Ys]) :- select(X, Xs, Ys).