Help!

Predicate When you are not sure which SWI-Prolog base or library predicate, combination of predicates, or options for a predicate(s) to use. Pack Use this when you need help with a Pack. PlDoc When you need help with PlDoc (SWI-Prolog documentation), e.g. writing declaration headers, creating output, etc. Tools Use when needing help with tools such as Emacs as opposed to needing help with coding. Algorithm Use this category when you need help implementing an algorithm. If you need help with a single predicate then use the Help - Predicate category instead. Data Structure Use this category if you need help with a specific data structure or trying to find a data structure, e.g. Association lists or Ordered Sets

Topic	Replies	Views	Activity
About the Help! category Help!	1	191	December 9, 2019
Learning how to use the Prolog Command Line Debugger? Try this new overview! Help!	1	159	November 4, 2020
I seem to have built SWI-Prolog without support for PceEmacs Tools	7	174	November 4, 2020
Preallocating storage for assoc Help!	4	221	November 4, 2020
How to use the srcurl option in Pengines? Help!	5	118	November 4, 2020
Implementing Quine's algorithm Algorithm how-to	114	1504	November 3, 2020
What is the unify port used for? Help!	5	161	November 3, 2020
What does 'without function symbols' mean? Help! tabling	3	141	November 3, 2020
What does the `/` Find command do in Trace Mode? Help!	1	116	November 3, 2020
Debug mode and trace points Help!	1	105	November 3, 2020
Collection of reference material about graphical debugger Tools	2	136	November 2, 2020
How to trace "system" predicates/hide my predicates from tracing? Help!	2	120	November 2, 2020
Need help installing library(real) Pack	12	175	November 2, 2020
Add the element to the list, if it passes the test Help!	1	129	November 1, 2020
`rdf_save/2` doesn't persist Graph? Predicate	1	129	October 31, 2020
Is there a way of unifying file syntax errors to a string when consulting? Predicate how-to	1	62	October 29, 2020
Is there a tutorial about programming in .pl files? Help!	1	74	October 28, 2020
How to run external commands? Predicate	11	99	October 28, 2020
How to create a DCG-predicate that is usable as both a parser and a generator? Algorithm	1	79	October 28, 2020
Can't retract http_session Help!	9	190	October 27, 2020
Attributed Variables: A simple test, an unexplained failure Help! discussion	11	215	October 26, 2020
CQL unknown procedure {}/1 Help!	4	219	October 25, 2020
Tabling of cyclic terms Help!	4	198	October 24, 2020
RDF: Extract value from type Predicate	1	61	October 24, 2020
Tabling restraints Help! how-to	0	58	October 24, 2020
Loop: remove the characters at the beginning Help!	3	108	October 23, 2020
Handler id from another module does not work Help!	4	79	October 23, 2020
Nested codes with long identifiers Help!	4	67	October 22, 2020
Term_expansion/2 in a module, user or system? Help!	5	104	October 22, 2020
Iterative Deepening and Cuts Help!	10	180	October 22, 2020