library

Prolog files

aggregate.pl  -- Aggregation operators on backtrackable predicates
ansi_term.pl
ansi_format/3	Format text with ANSI attributes.
ansi_get_color/2	Obtain the RGB color for an ANSI color parameter.
ansi_hyperlink/2	Create a hyperlink for a terminal emulator.
ansi_hyperlink/3	Create a hyperlink for a terminal emulator.
tty_url_hook/2	Hook for location_url/2.
console_color/2	Hook that allows for mapping abstract terms to concrete ANSI attributes.
message_line_element/2	Hook implementation that deals with ansi(+Attr, +Fmt, +Args) in message specifications.
apply.pl  -- Apply predicates on a list
apply_macros.pl  -- Goal expansion rules to avoid meta-calling
arithmetic.pl
arithmetic_expression_value/2	True when Result unifies with the arithmetic result of evaluating Expression.
arithmetic_function/1	Declare a predicate as an arithmetic function.
assoc.pl  -- Binary associations
atom.pl  -- Operations on atoms
backcomp.pl  -- Backward compatibility
base32.pl
base32/2	Translates between plaintext and base32 encoded atom or string.
base32/3	Encode/decode list of character codes using base32.
base64.pl  -- Base64 encoding and decoding
broadcast.pl  -- Event service
charsio.pl  -- I/O on Lists of Character Codes
check.pl  -- Consistency checking
codesio.pl  -- I/O on Lists of Character Codes
coinduction.pl  -- Co-Logic Programming
csv.pl  -- Process CSV (Comma-Separated Values) data
ctypes.pl  -- Character code classification
date.pl
date_time_value/3	Extract values from a date-time structure.
day_of_the_week/2	Computes the day of the week for a given date.
day_of_the_year/2	Computes the day of the year for a given date.
parse_time/2	Stamp is a timestamp created from parsing Text using the representation Format.
parse_time/3	Stamp is a timestamp created from parsing Text using the representation Format.
debug.pl  -- Print debug messages and test assertions
dialect.pl  -- Support multiple Prolog dialects
dicts.pl  -- Dict utilities
dif.pl  -- The dif/2 constraint
edinburgh.pl
debug/0	Switch on/off debug mode.
display/1	Write a term, ignoring operators and special syntax constructs such as brace terms ({a}) and lists ([a,b,c]).
display/2	Write a term, ignoring operators and special syntax constructs such as brace terms ({a}) and lists ([a,b,c]).
fileerrors/2	Query and change the fileerrors flag.
nodebug/0	Switch on/off debug mode.
reconsult/1	Load source file(s), wiping the old content first.
unknown/2	Edinburgh Prolog predicate for dealing dealing with undefined procedures.
edit.pl
edit/0	Edit associated or script file.
edit/1	Edit indicated object.
edit_command/2	This predicate should specify the shell-command called to invoke the user's editor.
locate/2	Locate object from the specified location.
locate/3
select_location/3
error.pl
current_encoding/1	True if Name is the name of a supported encoding.
current_type/3	True when Type is a currently defined type and Var satisfies Type of the body term Body succeeds.
domain_error/2	The argument is of the proper type, but has a value that is outside the supported values.
existence_error/2	Culprit is of the correct type and correct domain, but there is no existing (external) resource of type ObjectType that is represented by it.
existence_error/3	Culprit is of the correct type and correct domain, but there is no existing (external) resource of type ObjectType that is represented by it in the provided set.
has_type/2	True if Term satisfies Type.
instantiation_error/1	An argument is under-instantiated.
is_of_type/2	True if Term satisfies Type.
must_be/2	True if Term satisfies the type constraints for Type.
permission_error/3	It is not allowed to perform Operation on (whatever is represented by) Culprit that is of the given PermissionType (in fact, the ISO Standard is confusing and vague about these terms' meaning).
representation_error/1	A representation error indicates a limitation of the implementation.
resource_error/1	A goal cannot be completed due to lack of resources.
syntax_error/1	A text has invalid syntax.
type_error/2	Tell the user that Culprit is not of the expected ValidType.
uninstantiation_error/1	An argument is over-instantiated.
exceptions.pl
catch/4	As catch/3, only catching exceptions for which exception(ErrorType,Ball) is true.
error_term/2	Describe the formal part of error(Formal,ImplDefined) exceptions.
exception/2	If Ball is unbound, adds a delayed goal that tests the error belongs to Type when Ball is instantiated (by catch/3).
exception_term/2	Describe exceptions that are not error(Formal, _) terms.
exception_type/2	Declare all exceptions subsumed by Term to be an exception of Type.
explain.pl  -- Describe Prolog Terms
fastrw.pl
fast_read/1	The next term is read from current standard input and is unified with Term.
fast_write/1	Output Term in a way that fast_read/1 and fast_read/2 will be able to read it back.
fast_write_to_string/3	Perform a fast-write to the difference-slist String\Tail.
files.pl
can_open_file/2	Succeeds if the user has access to `File' in mode `Mode'.
chdir/1	Change Working Directory.
gensym.pl  -- Generate unique symbols
git.pl  -- Run GIT commands
hashtable.pl
ht_del/3	Delete Key-Value from HT.
ht_gen/3	True when Key-Value is in HT.
ht_get/3	True when Key is in HT and associated with Value.
ht_is_hashtable/1	True when HT is a hash table.
ht_keys/2	True when Keys is an ordered set of all keys in HT.
ht_new/1	Create a new hash table.
ht_pairs/2	True when Pairs and HT represent the same association.
ht_put/3	Add a Key-Value to HT.
ht_put/5	Add Key-Value to HT.
ht_put_new/3	As ht_put/3, but fails if Key is already in HT instead of updating the associated value.
ht_size/2	True when Size is the number of key-value pairs in HT.
ht_update/4	True when HT holds Key-Old before and Key-New after this call.
heaps.pl
add_to_heap/4	Adds Key with priority Priority to Heap0, constructing a new heap in Heap.
delete_from_heap/4	Deletes Key from Heap0, leaving its priority in Priority and the resulting data structure in Heap.
empty_heap/1	True if Heap is an empty heap.
get_from_heap/4	Retrieves the minimum-priority pair Priority-Key from Heap0.
heap_size/2	Determines the number of elements in Heap.
heap_to_list/2	Constructs a list List of Priority-Element terms, ordered by (ascending) priority.
is_heap/1	Returns true if X is a heap.
list_to_heap/2	If List is a list of Priority-Element terms, constructs a heap out of List.
merge_heaps/3	Merge the two heaps Heap0 and Heap1 in Heap.
min_of_heap/3	Unifies Key with the minimum-priority element of Heap and Priority with its priority value.
min_of_heap/5	Gets the two minimum-priority elements from Heap.
singleton_heap/3	True if Heap is a heap with the single element Priority-Key.
help.pl  -- Text based manual
increval.pl
incr_directly_depends/2	True if Goal1 depends on Goal2 in the IDG.
incr_invalid_subgoals/1	List is a sorted list (set) of the incremental subgoals that are currently invalid.
incr_invalidate_call/1	This is the XSB name, but the manual says incr_invalidate_calls/1 and the comment with the code suggests this is misnamed.
incr_invalidate_calls/1	Invalidate all tables for subgoals of Goal as well as tables that are affected by these.
incr_is_invalid/1	True when Subgoal's table is marked as invalid.
incr_propagate_calls/1	Activate the monotonic answer propagation similarly to when a new fact is asserted for a monotonic dynamic predicate.
incr_table_update/0	Updated all invalid tables.
incr_trans_depends/2	True for each pair in the transitive closure of incr_directly_depends(G1, G2).
is_incremental_subgoal/1	This predicate non-deterministically unifies Subgoal with incrementally tabled subgoals that are currently table entries.
intercept.pl  -- Intercept and signal interface
iostream.pl  -- Utilities to deal with streams
lazy_lists.pl  -- Lazy list handling
listing.pl  -- List programs and pretty print clauses
lists.pl  -- List Manipulation
macros.pl
expand_macros/5	Perform macro expansion on TermIn with layout PosIn to produce TermOut with layout PosOut.
include_macros/3	Include macros from another module.
macro_position/1	True when Position is the position of the macro.
main.pl  -- Provide entry point for scripts
make.pl  -- Reload modified source files
modules.pl
current_temporary_module/1	True when we are executing in the given temporary module context.
in_temporary_module/3	Run Goal on temporary loaded sources and discard the module and loaded predicates after completion.
nb_set.pl  -- Non-backtrackable sets
occurs.pl  -- Finding and counting sub-terms
operators.pl
pop_operators/0	Revert all changes to the operator table realised since the last push_operators/1.
pop_operators/1	Reset operators as pushed by push_operators/2.
push_op/3	As op/3, but this call must appear between push_operators/1 and pop_operators/0.
push_operators/1	Installs the operators from New, where New is a list of op(Prec, Type, :Name).
push_operators/2	Installs the operators from New, where New is a list of op(Prec, Type, :Name).
option.pl
dict_options/2	Convert between an option list and a dictionary.
merge_options/3	Merge two option sets.
meta_options/3	Perform meta-expansion on options that are module-sensitive.
option/2	Get an Option from Options.
option/3	Get an Option from Options.
select_option/3	Get and remove Option from Options.
select_option/4	Get and remove Option with default value.
optparse.pl  -- command line parsing
ordsets.pl
is_ordset/1	True if Term is an ordered set.
list_to_ord_set/2	Transform a list into an ordered set.
ord_add_element/3	Insert an element into the set.
ord_del_element/3	Delete an element from an ordered set.
ord_disjoint/2	True if Set1 and Set2 have no common elements.
ord_empty/1	True when List is the empty ordered set.
ord_intersect/2	True if both ordered sets have a non-empty intersection.
ord_intersect/3	Intersection holds the common elements of Set1 and Set2.
ord_intersection/2	Intersection of a powerset.
ord_intersection/3	Intersection holds the common elements of Set1 and Set2.
ord_intersection/4	Intersection and difference between two ordered sets.
ord_memberchk/2	True if Element is a member of OrdSet, compared using ==.
ord_selectchk/3	Selectchk/3, specialised for ordered sets.
ord_seteq/2	True if Set1 and Set2 have the same elements.
ord_subset/2	Is true if all elements of Sub are in Super.
ord_subtract/3	Diff is the set holding all elements of InOSet that are not in NotInOSet.
ord_symdiff/3	Is true when Difference is the symmetric difference of Set1 and Set2.
ord_union/2	True if Union is the union of all elements in the superset SetOfSets.
ord_union/3	Union is the union of Set1 and Set2.
ord_union/4	True iff ord_union(Set1, Set2, Union) and ord_subtract(Set2, Set1, New).
oset.pl
oset_addel/3	Ordered set element addition.
oset_delel/3	Ordered set element deletion.
oset_diff/3	Ordered set difference.
oset_dint/2	Distributed intersection.
oset_dunion/2	Distributed union.
oset_int/3	ordered set intersection.
oset_is/1	check that OSet in correct format (standard order).
oset_power/2	True when PSet is the powerset of Set.
oset_union/3	Union is the union of OSet1 and OSet2.
pairs.pl  -- Operations on key-value lists
persistency.pl
current_persistent_predicate/1	True if PI is a predicate that provides access to the persistent database DB.
db_assert/1	Assert Term into the database and record it for persistency.
db_attach/2	Use File as persistent database for the calling module.
db_attached/1	True if the context module attached to the persistent database File.
db_detach/0	Detach persistency from the calling module and delete all persistent clauses from the Prolog database.
db_retract/1	Retract terms from the database one-by-one.
db_retractall/1	Retract all matching facts and do the same in the database.
db_sync/1	Synchronise database with the associated file.
db_sync_all/1	Sync all registered databases.
persistent/1	Declare dynamic database terms.
portray_text.pl  -- Portray text
pprint.pl
print_term/2	Pretty print a Prolog term.
predicate_options.pl
assert_predicate_options/4	As predicate_options(:PI, +Arg, +Options).
check_predicate_option/3	Verify predicate options at runtime.
check_predicate_options/0	Analyse loaded program for erroneous options.
check_predicate_options/1	Verify calls to predicates that have options in all clauses of the predicate indicated by PredicateIndicator.
current_option_arg/2	True when Arg of PI processes predicate options.
current_predicate_option/3	True when Arg of PI processes Option.
current_predicate_options/3	True when Options is the current active option declaration for PI on Arg.
derive_predicate_options/0	Derive new predicate option declarations.
derived_predicate_options/1	Derive predicate option declarations for a module.
derived_predicate_options/3	Derive option arguments using static analysis.
predicate_options/3	Declare that the predicate PI processes options on Arg.
retractall_predicate_options/0	Remove all dynamically (derived) predicate options.
prolog_autoload.pl
autoload_all/0	Force all necessary autoloading to be done now.
autoload_all/1	Force all necessary autoloading to be done now.
prolog_breakpoints.pl  -- Manage Prolog break-points
prolog_clause.pl
prolog_code.pl  -- Utilities for reasoning about code
prolog_codewalk.pl  -- Prolog code walker
prolog_colour.pl
prolog_colourise_query/3	Colourise a query, to be executed in the context of SourceId.
prolog_colourise_stream/3	Determine colour fragments for the data on Stream.
prolog_colourise_stream/4	Determine colour fragments for the data on Stream.
prolog_colourise_term/4	Colourise the next term on Stream.
syntax_colour/2	True when a range classified Class must be coloured using Attributes.
vararg_goal_classification/3	Multifile hookable classification for vararg predicates.
prolog_config.pl
prolog_config/2	Get information on the configuration of the current Prolog system.
prolog_dump_runtime_variables/0	Dump the current configuration in shell format.
prolog_coverage.pl  -- Coverage analysis tool
prolog_debug.pl  -- User level debugging tools
prolog_format.pl  -- Analyse format specifications
prolog_history.pl  -- Per-directory persistent commandline history
prolog_jiti.pl
jiti_list/0	List the JITI (Just In Time Indexes) of selected predicates.
jiti_list/1	List the JITI (Just In Time Indexes) of selected predicates.
jiti_suggest_modes/0	Propose modes for the predicates referenced by Spec.
jiti_suggest_modes/1	Propose modes for the predicates referenced by Spec.
prolog_metainference.pl
infer_meta_predicate/2	True when MetaSpec is a meta-predicate specifier for the predicate Head.
inferred_meta_predicate/2	True when MetaSpec is an inferred meta-predicate specification for Head.
prolog_pack.pl  -- A package manager for Prolog
prolog_profile.pl  -- Execution profiler
prolog_source.pl  -- Examine Prolog source-files
prolog_stack.pl  -- Examine the Prolog stack
prolog_trace.pl
list_tracing/0	List predicates we are currently tracing.
notraceall/0	Remove all trace points.
trace/1	Print passes through ports of specified predicates.
trace/2	Print passes through ports of specified predicates.
tracing/2	True if Spec is traced using Ports.
prolog_versions.pl  -- Demand specific (Prolog) versions
prolog_wrap.pl
current_predicate_wrapper/4	True if Head is wrapped with Body.
unwrap_predicate/2	Remove the outermost wrapper whose name unifies with Name.
wrap_predicate/4	Wrap the predicate referenced by Head using Body.
prolog_xref.pl  -- Prolog cross-referencer data collection
pure_input.pl  -- Pure Input from files and streams
qsave.pl
quasi_quotations.pl  -- Define Quasi Quotation syntax
quintus.pl
abs/2	Unify `Absolute' with the absolute value of `Number'.
acos/2	Math library predicates.
asin/2	Math library predicates.
atan/2	Math library predicates.
atan2/3	Math library predicates.
atom_char/2	Same as ISO char_code/2.
ceiling/2	Math library predicates.
compile/1	Compile files.
cos/2	Math library predicates.
current_stream/3	SICStus/Quintus and backward compatible predicate.
date/1	Get current date as date(Y,M,D).
floor/2	Math library predicates.
genarg/3	Generalised version of ISO arg/3.
log/2	Math library predicates.
log10/2	Math library predicates.
midstring/3	Too difficult to explain.
midstring/4	Too difficult to explain.
midstring/5	Too difficult to explain.
midstring/6	Too difficult to explain.
no_style_check/1	Same as SWI-Prolog style_check(-Style).
on_exception/3
otherwise/0	For (A -> B ; otherwise -> C).
pow/3	Math library predicates.
prolog_flag/2	Same as ISO current_prolog_flag/2.
raise_exception/1	Quintus compatible exception handling.
round/2	Math library predicates.
sign/2	Math library predicates.
simple/1	Term is atomic or a variable.
sin/2	Math library predicates.
skip_line/0	Skip the rest of the current line (on Stream).
skip_line/1	Skip the rest of the current line (on Stream).
sqrt/2	Math library predicates.
stream_position/3	True when Old is the current position in Stream and the stream has been repositioned to New.
tan/2	Math library predicates.
unix/1	This predicate provides a partial emulation of the corresponding Quintus predicate.
random.pl  -- Random numbers
rbtrees.pl  -- Red black trees
readutil.pl  -- Read utilities
record.pl  -- Access compound arguments by name
sandbox.pl
sandbox_allowed_directive/1	Throws an exception if G is not considered a safe directive.
sandbox_allowed_expansion/1	Throws an exception if G is not considered a safe expansion goal.
sandbox_allowed_goal/1	Throw an exception if it is not safe to call G.
format_calls/3	Find ~@ calls from Format and Args.
safe_call/1	Call Goal if it complies with the sandboxing rules.
safe_directive/1	Hook to declare additional directives as safe.
safe_global_variable/1	Declare the given global variable safe to write to.
safe_goal/1	True if calling Goal provides no security risc.
safe_meta/2	Hook.
safe_primitive/1	True if Goal is safe to call (i.e., cannot access dangerous system-resources and cannot upset other parts of the Prolog process).
safe_prolog_flag/2	True if it is safe to set the flag Flag to Value.
settings.pl
convert_setting_text/3	Converts from textual form to Prolog Value.
current_setting/1	True if Setting is a currently defined setting.
env/2	Evaluate environment variables on behalf of arithmetic expressions.
env/3	Evaluate environment variables on behalf of arithmetic expressions.
list_settings/0	List settings to current_output.
list_settings/1	List settings to current_output.
load_settings/1	Load local settings from File.
load_settings/2	Load local settings from File.
restore_setting/1	Restore the value of setting Name to its default.
save_settings/0	Save modified settings to File.
save_settings/1	Save modified settings to File.
set_setting/2	Change a setting.
set_setting_default/2	Change the default for a setting.
setting/2	True when Name is a currently defined setting with Value.
setting/4	Define a setting.
setting_property/2	Query currently defined settings.
shell.pl
cd/0	Change working directory.
cd/1	Change working directory.
dirs/0	Manage the directory stack:.
file_style/2	True when File should be listed as a terminal hyperlink.
ls/0	Listing similar to Unix =ls -F=, flagging directories with =/=.
ls/1	Listing similar to Unix =ls -F=, flagging directories with =/=.
mv/2	Move (Rename) a file.
popd/0	Manage the directory stack:.
pushd/0	Manage the directory stack:.
pushd/1	Manage the directory stack:.
pwd/0	Print current working directory.
rm/1	Remove (unlink) a file.
shell/0	Execute an interactive shell.
shlib.pl  -- Utility library for loading foreign objects (DLLs, shared objects)
solution_sequences.pl  -- Modify solution sequences
sort.pl
statistics.pl  -- Get information about resource usage
streams.pl  -- Manage Prolog streams
strings.pl
dedent_lines/3	Remove shared indentation for all lines in a string.
indent_lines/3	Add Prefix to the beginning of lines in In.
indent_lines/4	Similar to indent_lines/3, but only adds Prefix to lines for which call(Filter, Line) succeeds.
interpolate_string/4	Establish a string from a template by replacing patterns.
string/4	Implements the quasi quotation syntax string.
string_lines/2	True when String represents Lines.
system.pl
lock_predicate/1	Transform a predicate into a system predicate.
system_mode/1	Switch the system into system or user mode.
system_module/0	Any predicate defined after this declaraction uptil the end of the file will become a system predicate.
unlock_predicate/1	Transform a system predicate into a normal system predicate.
tables.pl  -- XSB interface to tables
terms.pl  -- Term manipulation
thread.pl
call_in_thread/2	Run Goal as an interrupt in the context of Thread.
concurrent/3	Run Goals in parallel using N threads.
concurrent_and/2	Concurrent version of (Generator,Test).
concurrent_and/3	Concurrent version of (Generator,Test).
concurrent_forall/2	True when Action is true for all solutions of Generate.
concurrent_forall/3	True when Action is true for all solutions of Generate.
concurrent_maplist/2	Concurrent version of maplist/2.
concurrent_maplist/3	Concurrent version of maplist/2.
concurrent_maplist/4	Concurrent version of maplist/2.
first_solution/3	Try alternative solvers concurrently, returning the first answer.
thread_pool.pl  -- Resource bounded thread management
threadutil.pl  -- Interactive thread utilities
attach_console/0	Create a new console and make the standard Prolog streams point to it.
attach_console/1	Create a new console and make the standard Prolog streams point to it.
join_threads/0	Join all terminated threads.
tbacktrace/1	Print a backtrace for Thread to the stream user_error of the calling thread.
tbacktrace/2	Print a backtrace for Thread to the stream user_error of the calling thread.
tdebug/0	Enable debug-mode, trapping the graphical debugger on reaching spy-points or errors.
tdebug/1	Enable debug-mode, trapping the graphical debugger on reaching spy-points or errors.
thread_has_console/0	True when the calling thread has an attached console.
threads/0	List currently known threads with their status.
tnodebug/0	Disable debug-mode in all threads or the specified Thread.
tnodebug/1	Disable debug-mode in all threads or the specified Thread.
tprofile/1	Profile the operation of Thread until the user hits a key.
tspy/1	Trap the graphical debugger on reaching Spec in the specified or any thread.
tspy/2	Trap the graphical debugger on reaching Spec in the specified or any thread.
with_stopped_threads/2	Stop all threads except the caller while running once(Goal).
ugraphs.pl
add_edges/3	Unify NewGraph with a new graph obtained by adding the list of Edges to Graph.
add_vertices/3	Unify NewGraph with a new graph obtained by adding the list of Vertices to Graph.
complement/2	UGraphOut is a ugraph with an edge between all vertices that are not connected in UGraphIn and all edges from UGraphIn removed.
compose/3	Compose NewGraph by connecting the drains of LeftGraph to the sources of RightGraph.
connect_ugraph/3	Adds Start as an additional vertex that is connected to all vertices in UGraphIn.
del_edges/3	Unify NewGraph with a new graph obtained by removing the list of Edges from Graph.
del_vertices/3	Unify NewGraph with a new graph obtained by deleting the list of Vertices and all the edges that start from or go to a vertex in Vertices to the Graph.
edges/2	Unify Edges with all edges appearing in Graph.
neighbors/3	Neigbours is a sorted list of the neighbours of Vertex in Graph.
neighbours/3	Neigbours is a sorted list of the neighbours of Vertex in Graph.
reachable/3	True when Vertices is an ordered set of vertices reachable in UGraph, including Vertex.
top_sort/2	Sort vertices topologically.
transitive_closure/2	Generate the graph Closure as the transitive closure of Graph.
transpose_ugraph/2	Unify NewGraph with a new graph obtained from Graph by replacing all edges of the form V1-V2 by edges of the form V2-V1.
ugraph_layers/2	Sort vertices topologically.
ugraph_union/3	NewGraph is the union of Graph1 and Graph2.
vertices/2	Unify Vertices with all vertices appearing in Graph.
vertices_edges_to_ugraph/3	Create a UGraph from Vertices and Edges.
url.pl  -- Analysing and constructing URL
utf8.pl
utf8_codes/3	DCG translating between a Unicode code-list and its UTF-8 encoded byte-string.
varnumbers.pl  -- Utilities for numbered terms
wfs.pl  -- Well Founded Semantics interface
when.pl
when/2	Execute Goal when Condition is satisfied.
writef.pl  -- Old-style formatted write
www_browser.pl  -- Open a URL in the users browser
yall.pl  -- Lambda expressions
zip.pl  -- Access resource ZIP archives