if/1¶
Description¶
if(Goal)
Starts conditional compilation. The code following the directive is
compiled iff Goal
is true. The goal is subjected to
goal expansion when the directive occurs
in a source file.
Conditional compilation goals cannot depend on predicate definitions contained in the same source file that contains the conditional compilation directives (as those predicates only become available after the file is fully compiled and loaded).
Template and modes¶
if(@callable)