A.32 library(prolog_xref): Cross-reference data collection library
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Availability::- use_module(library(prolog_xref)).(can be autoloaded)
Sourcexref_source(+Source)
Gather information on Source. If Source has already been processed and is still up-to-date according to the file timestamp, no action is taken. This predicate must be called on a file before information can be gathered.