prolog - Prolog 中的 % 符号是什么意思？

Question

我认为这个 % 符号只是序言中的注释。我不确定。你能告诉我我是对的吗？例如，我见过这样的符号

%path(X,Y,[X,Y]):-
%next_to(X,Y).

有评论吗？

Answer 1

In Prolog, a percentage sign (%) means that the remaining characters on the line should be ignored. Source

There are two ways of commenting in a program. One method is to place the comments between the special brackets / * (open) and */ (closed). Anything placed between them is not treated by Prolog as part of the program definition. The brackets may be separated by any number of lines. Do remember, however, if using this format to include the closing bracket. The alternative is to use the percentage sign, %. In this case, everything after the sign to the end of the line is ignored.

%Prolog ignores everything after this sign
%but only up to the end of the line.

/* However, Prolog ignores everything after this
bracket until the closing bracket (which may
be some lines away). */ 

Excerpt from, An Introduction to Natural Language Processing Through Prolog, Clive Matthews

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