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library(tables): XSB interface to tables |

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- The SWI-Prolog library
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- library(simplex): Solve linear programming problems
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- library(tables): XSB interface to tables
- library(terms): Term manipulation
- library(thread): High level thread primitives
- library(thread_pool): Resource bounded thread management
- library(ugraphs): Graph manipulation library
- library(url): Analysing and constructing URL
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- library(yall): Lambda expressions

- The SWI-Prolog library
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- Reference manual

This module provides an XSB compatible library to access tables as created by tabling (see table/1). The aim of this library is first of all compatibility with XSB. This library contains some old and internal XSB predicates that are marked deprecated.

**tnot**(`:Goal`)- Tabled negation.
- deprecated
- This is a synonym to tnot/1.

**tfindall**(`+Template, :Goal, -Answers`)- This predicate emerged in XSB in an attempt to provide a safer
alternative to findall/3.
This doesn't really work in XSB and the SWI-Prolog emulation is a simple
call to findall/3.
Note that
`Goal`may not be a variant of an*incomplete*table.- deprecated
- Use findall/3

**set_pil_on****set_pil_off**- Dummy predicates for XSB compatibility.
- deprecated
- These predicates have no effect.

- [semidet]
**get_call**(`:CallTerm, -Trie, -Return`) - True when
`Trie`is an answer trie for a variant of`CallTerm`.`Return`is a term ret/N with N variables that share with variables in`CallTerm`. The`Trie`contains zero or more instances of the`Return`term. See also get_calls/3. - [nondet]
**get_calls**(`:CallTerm, -Trie, -Return`) - True when
`Trie`is an answer trie for a variant that unifies with`CallTerm`and Skeleton is the answer skeleton. See get_call/3 for details. - [nondet]
**get_returns**(`+ATrie, -Return`) - True when
`Return`is an answer template for the AnswerTrie.`Return`is a term `ret(...)`

. See get_calls/3. - [nondet]
**get_returns**(`+AnswerTrie, -Return, -NodeID`) - True when
`Return`is an answer template for the`AnswerTrie`and the answer is represented by the trie node`NodeID`.`Return`is a term `ret(...)`

. See get_calls/3. - [nondet]
**get_returns_and_tvs**(`+AnswerTrie, -Return, -TruthValue`) - Identical to get_returns/2,
but also obtains the truth value of a given answer, setting
`TruthValue`to`t`

if the answer is unconditional and to`u`

if it is conditional. If a conditional answer has multiple delay lists, this predicate will succeed only once, so that using this predicate may be more efficient than get_residual/2 (although less informative) - [nondet]
**get_returns_and_dls**(`+AnswerTrie, -Return, :DelayLists`) - True when
`Return`appears in`AnswerTrie`with the given`DelayLists`.`DelayLists`is a list of lists, where the inner lists expresses a conjunctive condition and and outer list a disjunction. - [nondet]
**get_residual**(`:CallTerm, -DelayList`) - True if
`CallTerm`appears in a table and has`DelayList`. SWI-Prolog's representation for a delay is a body term, more specifically a disjunction of conjunctions. The XSB representation is non-deterministic and uses a list to represent the conjunction.The delay condition is a disjunction of conjunctions and is represented as such in the native SWI-Prolog interface as a nested term of ;/2 and ,/2, using

`true`

if the answer is unconditional. This XSB predicate returns the associated conjunctions non-deterministically as a list.See also call_residual_program/2 from

`library(wfs)`

. - [nondet]
**get_returns_for_call**(`:CallTerm, -AnswerTerm`) - True if
`AnswerTerm`appears in the tables for the*variant*`CallTerm`. **abolish_table_pred**(`:CallTermOrPI`)- Invalidates all tabled subgoals for the predicate denoted by the
predicate or term indicator Pred.
- To be done
- If Pred has a subgoal that contains a conditional answer, the default behavior will be to transitively abolish any tabled predicates with subgoals having answers that depend on any conditional answers of S.

- [det]
**abolish_table_call**(`+Head`) - [det]
**abolish_table_call**(`+Head, +Options`) - Same as abolish_table_subgoals/1.
See also abolish_table_pred/1.
- deprecated
- Use abolish_table_subgoals/[1,2].

**abolish_table_subgoals**(`:Head, +Options`)- Behaves as abolish_table_subgoals/1,
but allows the default
`table_gc_action`

to be over-ridden with a flag, which can be either`abolish_tables_transitively`

or`abolish_tables_singly`

.- Compatibility
`Options`is compatible with XSB, but does not follow the ISO option handling conventions.

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