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

  • swipl
    • library
      • error.pl
      • debug.pl
      • apply.pl
      • lists.pl -- List Manipulation
      • broadcast.pl -- Event service
      • predicate_options.pl -- Access and analyse predicate options
      • shlib.pl
      • option.pl
      • thread_pool.pl
      • gensym.pl -- Generate unique symbols
      • settings.pl
      • arithmetic.pl -- Extensible arithmetic
      • 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 -- Prolog syntax colouring support.
      • 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
      • prolog_stack.pl -- Examine the Prolog stack
      • make.pl -- Reload modified source files
      • date.pl -- Process dates and times
        • date_time_value/3
        • parse_time/2
        • parse_time/3
        • day_of_the_week/2
        • day_of_the_year/2
      • prolog_profile.pl -- Execution profiler
      • listing.pl -- List programs and pretty print clauses
      • quintus.pl -- Quintus compatibility
      • threadutil.pl -- Interactive thread utilities
      • edit.pl -- Editor interface
      • statistics.pl -- Get information about resource usage
      • streams.pl -- Manage Prolog streams
      • optparse.pl -- command line parsing
      • strings.pl -- String utilities
      • terms.pl -- Term manipulation
      • prolog_codewalk.pl -- Prolog code walker
      • coinduction.pl -- Co-Logic Programming
      • wfs.pl -- Well Founded Semantics interface
      • writef.pl -- Old-style formatted write
      • heaps.pl -- heaps/priority queues
      • macros.pl -- Macro expansion
      • charsio.pl -- I/O on Lists of Character Codes
      • check.pl -- Consistency checking
      • help.pl -- Text based manual
      • portray_text.pl -- Portray text
      • ansi_term.pl -- Print decorated text to ANSI consoles
      • tables.pl -- XSB interface to tables
      • shell.pl -- Elementary shell commands
      • prolog_metainference.pl -- Infer meta-predicate properties
      • prolog_jiti.pl -- Just In Time Indexing (JITI) utilities
      • win_menu.pl -- Console window menu
      • tty.pl -- Terminal operations
      • system.pl -- System utilities
      • prolog_coverage.pl -- Coverage analysis tool
      • fastrw.pl -- Fast reading and writing of terms
      • intercept.pl -- Intercept and signal interface
      • zip.pl -- Access resource ZIP archives
      • exceptions.pl -- Exception classification
      • codesio.pl -- I/O on Lists of Character Codes
      • prolog_versions.pl -- Demand specific (Prolog) versions
      • prolog_debug.pl -- User level debugging tools
      • prolog_trace.pl -- Print access to predicates
      • increval.pl -- Incremental dynamic predicate modification
      • rwlocks.pl -- Read/write locks
      • hashtable.pl -- Hash tables
      • files.pl
      • prolog_config.pl -- Provide configuration information
      • prolog_autoload.pl -- Autoload all dependencies
      • qsave.pl -- Save current program as a state or executable
      • when.pl -- Conditional coroutining
      • prolog_wrap.pl -- Wrapping predicates
      • base32.pl -- Base32 encoding and decoding
      • sort.pl
      • varnumbers.pl -- Utilities for numbered terms
      • explain.pl -- Describe Prolog Terms
      • prolog_history.pl -- Per-directory persistent commandline history
      • oset.pl -- Ordered set manipulation
 parse_time(+Text, -Stamp) is semidet
 parse_time(+Text, ?Format, -Stamp) is semidet
Stamp is a timestamp created from parsing Text using the representation Format. Currently supported formats are:
rfc_1123
Preferred for the HTTP protocol to represent time-stamps, e.g.
Fri, 08 Dec 2006 15:29:44 GMT

All components except for the time zone are obligatory. If the time zone is omitted, the time is interpreted as local time.

rfc_1036
(Outdated) alternative for HTTP Protocol, e.g.
Sunday, 06-Nov-94 08:49:37 GMT
iso_8601
Commonly used in XML documents. Actually the XML RFC3339 is a profile of ISO8601. For example
2006-12-08T15:29:44Z

The ISO8601 format allows removing components from the right, returning the lowest time stamp in the specified internal. If a time is specified but no time zone, the time stamp is computed for the local time. If only the date components are specified, the stamp uses UTC. To compute the start of a day in local time, use e.g. 2006-12-08T00.

asctime
ANSI C's asctime() format, e.g.
Sun Nov  6 08:49:37 1994

This format has no time zone and is interpreted as local time.

Arguments:
Text- is an atom, string or list of character codes.
See also
- xsd_time_string/3 from library(sgml) implements RFC3339 strictly.
ClioPatria (version V3.1.1-51-ga0b30a5)