/usr/local/lib/swipl/library/quintus.pl
All Application Manual Name SummaryHelp

  • swipl
    • library
      • error.pl
      • debug.pl
      • apply.pl
      • lists.pl
      • broadcast.pl
      • predicate_options.pl
      • shlib.pl
      • option.pl
      • thread_pool.pl
      • gensym.pl
      • 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
      • record.pl -- Access compound arguments by name
      • quasi_quotations.pl -- Define Quasi Quotation syntax
      • pure_input.pl -- Pure Input from files and streams
      • solution_sequences.pl -- Modify solution sequences
      • ordsets.pl -- Ordered set manipulation
      • random.pl -- Random numbers
      • base64.pl -- Base64 encoding and decoding
      • aggregate.pl -- Aggregation operators on backtrackable predicates
      • yall.pl -- Lambda expressions
      • sandbox.pl -- Sandboxed Prolog code
      • apply_macros.pl -- Goal expansion rules to avoid meta-calling
      • assoc.pl -- Binary associations
      • prolog_format.pl -- Analyse format specifications
      • csv.pl -- Process CSV (Comma-Separated Values) data
      • pprint.pl -- Pretty Print Prolog terms
      • atom.pl -- Operations on atoms
      • modules.pl -- Module utility predicates
      • occurs.pl -- Finding and counting sub-terms
      • prolog_xref.pl -- Prolog cross-referencer data collection
      • prolog_colour.pl
      • lazy_lists.pl -- Lazy list handling
      • ugraphs.pl -- Graph manipulation library
      • iostream.pl -- Utilities to deal with streams
      • url.pl -- Analysing and constructing URL
      • www_browser.pl -- Open a URL in the users browser
      • prolog_pack.pl -- A package manager for Prolog
      • git.pl -- Run GIT commands
      • rbtrees.pl -- Red black trees
      • dif.pl -- The dif/2 constraint
      • charsio.pl -- I/O on Lists of Character Codes
      • prolog_stack.pl -- Examine the Prolog stack
      • edinburgh.pl -- Some traditional Edinburgh predicates
      • prolog_clause.pl -- Get detailed source-information about a clause
      • prolog_breakpoints.pl -- Manage Prolog break-points
      • wfs.pl -- Well Founded Semantics interface
      • dialect.pl -- Support multiple Prolog dialects
      • prolog_code.pl -- Utilities for reasoning about code
      • sort.pl
      • dicts.pl -- Dict utilities
      • varnumbers.pl -- Utilities for numbered terms
      • base32.pl -- Base32 encoding and decoding
      • codesio.pl -- I/O on Lists of Character Codes
      • coinduction.pl -- Co-Logic Programming
      • date.pl -- Process dates and times
      • heaps.pl -- heaps/priority queues
      • statistics.pl -- Get information about resource usage
      • terms.pl -- Term manipulation
      • when.pl -- Conditional coroutining
      • backcomp.pl -- Backward compatibility
      • system.pl -- System utilities
      • quintus.pl -- Quintus compatibility
        • unix/1
        • otherwise/0
        • abs/2
        • sin/2
        • cos/2
        • tan/2
        • log/2
        • log10/2
        • pow/3
        • ceiling/2
        • floor/2
        • round/2
        • sqrt/2
        • acos/2
        • asin/2
        • atan/2
        • atan2/3
        • sign/2
        • genarg/3
        • prolog_flag/2
        • date/1
        • no_style_check/1
        • simple/1
        • current_stream/3
        • stream_position/3
        • skip_line/0
        • skip_line/1
        • compile/1
        • atom_char/2
        • midstring/3
        • midstring/4
        • midstring/5
        • midstring/6
        • raise_exception/1
        • on_exception/3
      • utf8.pl -- UTF-8 encoding/decoding on lists of character codes.
      • streams.pl -- Manage Prolog streams
      • ansi_term.pl -- Print decorated text to ANSI consoles
      • prolog_debug.pl -- User level debugging tools
      • optparse.pl -- command line parsing
      • zip.pl -- Access resource ZIP archives
      • tables.pl -- XSB interface to tables
      • prolog_profile.pl -- Execution profiler
      • listing.pl -- List programs and pretty print clauses
      • threadutil.pl -- Interactive thread utilities
      • prolog_coverage.pl -- Coverage analysis tool
      • prolog_versions.pl -- Demand specific (Prolog) versions
      • check.pl -- Consistency checking
      • prolog_codewalk.pl -- Prolog code walker
      • increval.pl -- Incremental dynamic predicate modification
      • strings.pl -- String utilities
      • ctypes.pl -- Character code classification
      • hashtable.pl -- Hash tables
 midstring(?ABC, ?B, ?AC) is nondet
 midstring(?ABC, ?B, ?AC, LenA) is nondet
 midstring(?ABC, ?B, ?AC, LenA, LenB) is nondet
 midstring(?ABC, ?B, ?AC, LenA, LenB, LenC) is nondet
Too difficult to explain. See the Quintus docs. As far as I understand them the code below emulates this function just fine.