- swipl
- library
- error.pl
- debug.pl -- Print debug messages and test assertions
- apply.pl -- Apply predicates on a list
- lists.pl -- List Manipulation
- broadcast.pl -- Event service
- predicate_options.pl -- Access and analyse predicate options
- shlib.pl
- option.pl -- Option list processing
- thread_pool.pl
- gensym.pl -- Generate unique symbols
- settings.pl
- arithmetic.pl
- main.pl -- Provide entry point for scripts
- readutil.pl -- Read utilities
- operators.pl -- Manage operators
- pairs.pl -- Operations on key-value lists
- prolog_source.pl -- Examine Prolog source-files
- quasi_quotations.pl -- Define Quasi Quotation syntax
- url.pl -- Analysing and constructing URL
- www_browser.pl -- Open a URL in the users browser
- prolog_colour.pl
- record.pl -- Access compound arguments by name
- prolog_xref.pl -- Prolog cross-referencer data collection
- occurs.pl -- Finding and counting sub-terms
- ordsets.pl -- Ordered set manipulation
- assoc.pl -- Binary associations
- ugraphs.pl -- Graph manipulation library
- iostream.pl -- Utilities to deal with streams
- atom.pl -- Operations on atoms
- prolog_pack.pl -- A package manager for Prolog
- solution_sequences.pl -- Modify solution sequences
- git.pl -- Run GIT commands
- ctypes.pl -- Character code classification
- utf8.pl -- UTF-8 encoding/decoding on lists of character codes.
- base64.pl -- Base64 encoding and decoding
- persistency.pl -- Provide persistent dynamic predicates
- pure_input.pl -- Pure Input from files and streams
- nb_set.pl -- Non-backtrackable sets
- aggregate.pl -- Aggregation operators on backtrackable predicates
- csv.pl -- Process CSV (Comma-Separated Values) data
- dialect.pl -- Support multiple Prolog dialects
- apply_macros.pl -- Goal expansion rules to avoid meta-calling
- yall.pl -- Lambda expressions
- prolog_code.pl -- Utilities for reasoning about code
- dif.pl -- The dif/2 constraint
- thread.pl -- High level thread primitives
- rbtrees.pl -- Red black trees
- nb_rbtrees.pl -- Non-backtrackable operations on red black trees
- random.pl -- Random numbers
- sandbox.pl -- Sandboxed Prolog code
- prolog_format.pl -- Analyse format specifications
- pprint.pl -- Pretty Print Prolog terms
- modules.pl -- Module utility predicates
- lazy_lists.pl -- Lazy list handling
- edinburgh.pl -- Some traditional Edinburgh predicates
- prolog_clause.pl -- Get detailed source-information about a clause
- prolog_breakpoints.pl -- Manage Prolog break-points
- dicts.pl -- Dict utilities
- backcomp.pl -- Backward compatibility
- date.pl -- Process dates and times
- listing.pl -- List programs and pretty print clauses
- prolog_profile.pl -- Execution profiler
- quintus.pl -- Quintus compatibility
- shell.pl -- Elementary shell commands
- intercept.pl -- Intercept and signal interface
- wfs.pl -- Well Founded Semantics interface
- tables.pl -- XSB interface to tables
- system.pl -- System utilities
- threadutil.pl -- Interactive thread utilities
- optparse.pl -- command line parsing
- make.pl -- Reload modified source files
- writef.pl -- Old-style formatted write
- prolog_stack.pl -- Examine the Prolog stack
- prolog_versions.pl -- Demand specific (Prolog) versions
- terms.pl -- Term manipulation
- prolog_jiti.pl -- Just In Time Indexing (JITI) utilities
- files.pl
- prolog_trace.pl -- Print access to predicates
- tty.pl -- Terminal operations
- varnumbers.pl -- Utilities for numbered terms
- prolog_debug.pl -- User level debugging tools
- check.pl -- Consistency checking
- portray_text.pl -- Portray text
- ansi_term.pl -- Print decorated text to ANSI consoles
- heaps.pl -- heaps/priority queues
- strings.pl -- String utilities
- charsio.pl -- I/O on Lists of Character Codes
- edit.pl -- Editor interface
- zip.pl -- Access resource ZIP archives
- prolog_history.pl -- Per-directory persistent commandline history
- prolog_config.pl -- Provide configuration information
- streams.pl -- Manage Prolog streams
- statistics.pl -- Get information about resource usage
- codesio.pl -- I/O on Lists of Character Codes
- prolog_metainference.pl -- Infer meta-predicate properties
- prolog_coverage.pl -- Coverage analysis tool
- fastrw.pl -- Fast reading and writing of terms
- sort.pl
- qsave.pl -- Save current program as a state or executable
- prolog_autoload.pl -- Autoload all dependencies
- macros.pl -- Macro expansion
- help.pl -- Text based manual
- prolog_codewalk.pl -- Prolog code walker
- win_menu.pl -- Console window menu
- base32.pl -- Base32 encoding and decoding
- when.pl -- Conditional coroutining
- increval.pl -- Incremental dynamic predicate modification
- explain.pl -- Describe Prolog Terms
- coinduction.pl -- Co-Logic Programming
- prolog_wrap.pl -- Wrapping predicates
- hashtable.pl -- Hash tables
- oset.pl -- Ordered set manipulation
- library
- menu(+Title, +Options, -Choice) is semidet
- Show a menu. The display is cleared, the title is centered at
the top, the options are displayed and finally the user actions
are parsed and the user's choice is returned. The screen looks
like this:
-------------------------------------------- | | | Title | | | | 1) Option One | | 2) Option Two | | 3) Quit | | | | Your Choice? * | | |
The user selects an item by pressing the number of the item, or the first letter of the option. If more then one option match, the common prefix of the matching options is given and the user is expected to type the next character. On illegal input the screen is flashed (or a beep is given if the terminal can't flash the screen).
Text fields (the title and option texts) are either plain atoms or terms Fmt/Args. In the latter case the argument is transformed into an atom using format/3.
The specification of an option is a term PrologName:UserName. PrologName is an atom, which is returned as choice if the user selects this menu item. UserName is processed as a text field (see above) and displayed. The entries are numbered automatically.
The example above could be defined as:
get_action(Choice) :- menu('Title', [ option_1 : 'Option One' , option_2 : 'Option Two' , quit : 'Quit' ], Choice).