src/Pure/library.ML
Thu, 31 Jan 2019 16:32:41 +0100 wenzelm prefer tail-recursive version (despite 4b99b1214034);
Fri, 14 Dec 2018 11:35:21 +0100 wenzelm tuned whitespace;
Mon, 05 Nov 2018 15:00:22 +0100 wenzelm tuned (see map_index);
Fri, 11 May 2018 19:59:05 +0200 wenzelm unused;
Sat, 05 May 2018 21:44:18 +0200 wenzelm hexadecimal representation of byte string;
Thu, 01 Feb 2018 15:12:57 +0100 wenzelm tuned signature: more operations;
Sun, 28 Jan 2018 19:28:52 +0100 wenzelm clarified take/drop/chop prefix/suffix;
Sun, 28 Jan 2018 16:09:00 +0100 wenzelm clarified signature;
Sun, 10 Dec 2017 20:31:14 +0100 wenzelm clean log file on Windows;
Thu, 26 Oct 2017 13:44:41 +0200 wenzelm use Poly/ML 5.7.1 test version as default;
Fri, 26 May 2017 15:19:21 +0200 wenzelm store errors in build db;
Mon, 22 May 2017 19:42:52 +0200 wenzelm permissive trim_line as in Scala, e.g. relevant for poly/TextIO.print output on Windows;
Mon, 17 Oct 2016 15:46:51 +0200 wenzelm accomodate Poly/ML repository version, which treats singleton strings as boxed;
Tue, 14 Jun 2016 20:48:42 +0200 haftmann non-deprecated char literals for Scala
Sat, 09 Apr 2016 11:21:38 +0200 wenzelm clarified modules;
Wed, 06 Apr 2016 16:33:33 +0200 wenzelm clarified modules;
Mon, 07 Mar 2016 21:53:21 +0100 wenzelm discontinued cd, pwd;
Sun, 06 Mar 2016 16:19:02 +0100 wenzelm clarified treatment of fragments of Isabelle symbols during bootstrap;
Tue, 01 Mar 2016 20:51:38 +0100 wenzelm clarified modules;
Mon, 29 Feb 2016 15:39:17 +0100 wenzelm clarified modules;
Thu, 19 Nov 2015 22:35:10 +0100 wenzelm tuned;
Tue, 18 Aug 2015 16:08:47 +0200 wenzelm clarified File.standard_path vs. File.platform_path (like Isabelle/Scala operations);
Thu, 13 Aug 2015 11:05:19 +0200 wenzelm tuned signature, in accordance to sortBy in Scala;
Thu, 29 Jan 2015 15:27:29 +0100 wenzelm tuned;
Mon, 22 Dec 2014 16:44:54 +0100 wenzelm obsolete;
Mon, 22 Dec 2014 14:33:53 +0100 wenzelm separate module Random;
Wed, 26 Nov 2014 20:05:34 +0100 wenzelm renamed "pairself" to "apply2", in accordance to @{apply 2};
Wed, 08 Oct 2014 17:37:20 +0200 wenzelm eliminated some exotic combinators;
Wed, 08 Oct 2014 14:34:30 +0200 wenzelm tuned;
Tue, 12 Aug 2014 13:18:17 +0200 wenzelm more compact representation of special string values;
Sun, 10 Aug 2014 15:45:06 +0200 wenzelm tuned -- avoid confusion with @{assert} for system failures (exception Fail);
Thu, 31 Jul 2014 20:09:30 +0200 wenzelm more general notion of "user error" including empty message -- NB: Output.error_message needs non-empty string to emit anything;
Mon, 10 Mar 2014 22:14:53 +0100 wenzelm tuned messages -- in accordance to Isabelle/Scala;
Sat, 18 Jan 2014 19:15:12 +0100 wenzelm support for nested text cartouches;
Fri, 31 May 2013 09:30:32 +0200 haftmann combinator fold_range, corresponding to map_range
Tue, 14 May 2013 20:46:09 +0200 wenzelm more uniform Markup.print_real;
Thu, 07 Mar 2013 15:02:55 +0100 wenzelm tuned signature -- prefer terminology of Scala and Axiom;
Wed, 16 Jan 2013 20:40:50 +0100 wenzelm eliminated dead code;
Sun, 30 Dec 2012 16:33:05 +0100 wenzelm tuned whitespace;
Thu, 23 Aug 2012 13:03:29 +0200 wenzelm prefer classic take_prefix/take_suffix over chop_while (cf. 0659e84bdc5f);
Mon, 16 Jul 2012 15:57:21 +0200 wenzelm replaced quicksort by mergesort, which might be a bit more efficient for key operations like Ord_List.make, Sorts.minimize_sort;
Mon, 16 Apr 2012 23:07:40 +0200 wenzelm redirect bash stderr to Isabelle warning as appropriate -- avoid raw process error output which may either get ignored or overload PIDE syslog in extreme cases;
Wed, 21 Mar 2012 11:00:34 +0100 wenzelm prefer explicitly qualified exception List.Empty;
Mon, 19 Mar 2012 21:16:19 +0100 wenzelm discontinued remains of duplicate exception UnequalLengths (cf. 441260986b63);
Mon, 19 Mar 2012 21:10:33 +0100 wenzelm moved some legacy stuff;
Mon, 12 Mar 2012 23:16:02 +0100 wenzelm some support for grouped list operations;
Thu, 08 Mar 2012 21:35:54 +0100 wenzelm tuned;
Sat, 03 Mar 2012 22:27:30 +0100 wenzelm discontinued obsolete Library.foldl_map and Library.apply (NB: apply = fold I);
Thu, 24 Nov 2011 21:15:20 +0100 wenzelm more abstract datatype stamp, which avoids pointless allocation of mutable cells;
Thu, 01 Sep 2011 14:10:52 +0200 wenzelm more flexible sorting;
Wed, 13 Jul 2011 20:13:27 +0200 wenzelm low-level tuning;
Mon, 04 Jul 2011 16:51:45 +0200 wenzelm pervasive Basic_Library in Scala;
Thu, 30 Jun 2011 13:59:55 +0200 wenzelm getenv_strict in ML;
Mon, 27 Jun 2011 15:03:55 +0200 wenzelm old gensym is now legacy -- global state is out of fashion, and its result is not guaranteed to be fresh;
Wed, 08 Jun 2011 15:56:57 +0200 wenzelm more robust exception pattern General.Subscript;
Tue, 19 Apr 2011 15:58:05 +0200 wenzelm slightly more special eq_list/eq_set, with shortcut involving pointer_eq;
Wed, 12 Jan 2011 14:07:29 +0100 wenzelm smart_string_of_real: print integer values without fractional part;
Mon, 10 Jan 2011 16:56:47 +0100 wenzelm made SML/NJ happy;
Mon, 10 Jan 2011 16:07:16 +0100 wenzelm tuned string_of_int to avoid allocation for small integers;
Mon, 10 Jan 2011 15:19:48 +0100 wenzelm standardized split_last/last_elem towards List.last;
Fri, 03 Dec 2010 17:29:27 +0100 wenzelm removed confusing comments (cf. 500171e7aa59);
Fri, 03 Dec 2010 10:17:55 +0100 krauss really fixed comment (cf. 7abeb749ae99)
Fri, 03 Dec 2010 08:40:47 +0100 bulwahn fixing comment in library
Sat, 27 Nov 2010 00:00:54 +0100 wenzelm merged;
Fri, 26 Nov 2010 23:13:58 +0100 haftmann strict forall2
Fri, 26 Nov 2010 22:29:41 +0100 wenzelm make two copies (!) of Library.UnequalLengths coincide with ListPair.UnequalLengths;
Fri, 26 Nov 2010 22:04:33 +0100 wenzelm just one version of fold_rev2;
Sat, 20 Nov 2010 00:53:26 +0100 wenzelm renamed raw "explode" function to "raw_explode" to emphasize its meaning;
Tue, 16 Nov 2010 10:33:36 +0100 haftmann added forall2 predicate lifter
Fri, 12 Nov 2010 14:51:28 +0100 wenzelm tuned signatures;
Wed, 03 Nov 2010 11:33:51 +0100 wenzelm discontinued obsolete function sys_error and exception SYS_ERROR;
Sat, 30 Oct 2010 16:33:58 +0200 wenzelm support for real valued configuration options;
Fri, 01 Oct 2010 10:25:36 +0200 haftmann chop_while replace drop_while and take_while
Thu, 30 Sep 2010 18:37:29 +0200 haftmann take_while, drop_while
Wed, 22 Sep 2010 18:21:48 +0200 wenzelm renamed setmp_noncritical to Unsynchronized.setmp to emphasize its meaning;
Tue, 20 Jul 2010 14:41:13 +0200 wenzelm tuned;
Wed, 05 May 2010 18:25:34 +0200 haftmann farewell to old-style mem infixes -- type inference in situations with mem_int and mem_string should provide enough information to resolve the type of (op =)
Fri, 26 Mar 2010 20:30:05 +0100 wenzelm tuned white space;
Wed, 09 Dec 2009 21:38:12 +0100 haftmann take and drop as projections of chop
Tue, 24 Nov 2009 17:28:25 +0100 haftmann curried take/drop
Mon, 26 Oct 2009 15:16:28 +0100 haftmann avoid upto if not needed
Fri, 23 Oct 2009 10:11:56 +0200 haftmann merged
Thu, 22 Oct 2009 16:58:22 +0200 haftmann restored accidentally deleted submultiset
Thu, 22 Oct 2009 16:52:06 +0200 haftmann multiset operations with canonical argument order
Thu, 22 Oct 2009 17:54:47 +0200 wenzelm made SML/NJ happy;
Thu, 22 Oct 2009 13:48:06 +0200 haftmann map_range (and map_index) combinator
Wed, 21 Oct 2009 12:12:21 +0200 haftmann merged
Wed, 21 Oct 2009 12:09:37 +0200 haftmann curried inter as canonical list operation (beware of argument order)
Wed, 21 Oct 2009 12:08:52 +0200 haftmann merged
Wed, 21 Oct 2009 12:02:56 +0200 haftmann curried union as canonical list operation
Wed, 21 Oct 2009 10:15:31 +0200 haftmann removed old-style \ and \\ infixes
Wed, 21 Oct 2009 08:14:38 +0200 haftmann dropped redundant gen_ prefix
Tue, 20 Oct 2009 16:13:01 +0200 haftmann replaced old_style infixes eq_set, subset, union, inter and variants by generic versions
Sat, 17 Oct 2009 22:34:19 +0200 wenzelm tuned/moved divide_and_conquer';
Sat, 17 Oct 2009 15:57:51 +0200 wenzelm indicate CRITICAL nature of various setmp combinators;
Tue, 29 Sep 2009 11:48:32 +0200 wenzelm Raw ML references as unsynchronized state variables.
Mon, 10 Aug 2009 12:24:47 +0200 haftmann added map_transpose
Sat, 25 Jul 2009 12:43:45 +0200 wenzelm eliminated redundant Library.multiply;
Fri, 10 Jul 2009 07:59:27 +0200 haftmann dropped find_index_eq
Sun, 24 May 2009 15:02:23 +0200 haftmann funpow_yield; tuned
Wed, 18 Mar 2009 20:03:01 +0100 wenzelm Library.merge/OrdList.union: optimize the important special case where the tables coincide -- NOTE: this changes both the operational behaviour and the result for non-standard eq/ord notion;
Wed, 18 Mar 2009 15:23:52 +0100 haftmann made SML/NJ happy
Tue, 17 Mar 2009 14:09:20 +0100 wenzelm renamed Tactic.taglist/untaglist/orderlist to tag_list/untag_list/order_list (in library.ML);
Sun, 01 Mar 2009 23:36:12 +0100 wenzelm use long names for old-style fold combinators;
Fri, 13 Feb 2009 07:53:38 +1100 kleing New command find_consts searching for constants by type (by Timothy Bourke).
Thu, 11 Dec 2008 17:55:51 +0100 ballarin Clarified comment.
Mon, 10 Nov 2008 19:42:20 +0100 haftmann clarified comment
Thu, 09 Oct 2008 08:47:28 +0200 haftmann removed legacy |>>>
Thu, 25 Sep 2008 09:28:05 +0200 haftmann burrow_fst
Sun, 07 Sep 2008 22:19:46 +0200 wenzelm added change_result;
Thu, 04 Sep 2008 16:03:44 +0200 wenzelm Thread.getLocal/setLocal;
Wed, 27 Aug 2008 20:36:23 +0200 wenzelm replaced find_substring by first_field;
Wed, 27 Aug 2008 16:32:18 +0200 wenzelm added find_substring;
Wed, 13 Aug 2008 20:57:20 +0200 wenzelm removed obsolete untabify (superceded by SymbolPos.tabify_content);
Thu, 27 Mar 2008 19:05:10 +0100 haftmann changed wrong assignement in signature sections
Thu, 27 Mar 2008 17:35:56 +0100 wenzelm tuned comments;
Sat, 16 Feb 2008 16:43:56 +0100 wenzelm setmp: uninterruptible;
Sat, 26 Jan 2008 17:08:39 +0100 wenzelm added surround;
Tue, 22 Jan 2008 23:07:24 +0100 haftmann added map_split
Thu, 03 Jan 2008 00:15:39 +0100 wenzelm added setmp_thread_data;
Tue, 01 Jan 2008 16:09:26 +0100 wenzelm removed separate exists/forall code;
Tue, 18 Dec 2007 22:21:40 +0100 wenzelm serial: now based on specific version in structure Multithreading;
Mon, 17 Dec 2007 18:39:18 +0100 berghofe Added foldl1.
Wed, 05 Dec 2007 20:56:42 +0100 wenzelm tuned signature;
Wed, 05 Dec 2007 14:16:05 +0100 haftmann map_product and fold_product
Mon, 29 Oct 2007 16:13:43 +0100 wenzelm added bool_ord;
Tue, 16 Oct 2007 23:12:38 +0200 haftmann added yield_singleton
Tue, 16 Oct 2007 19:45:54 +0200 wenzelm added perhaps_apply/loop;
Thu, 11 Oct 2007 19:10:21 +0200 wenzelm removed obsolete flip;
Fri, 05 Oct 2007 23:04:16 +0200 wenzelm added burrow_options;
Thu, 04 Oct 2007 19:54:47 +0200 haftmann added nth_drop
Tue, 18 Sep 2007 16:08:00 +0200 wenzelm simplified type int (eliminated IntInf.int, integer);
Sun, 16 Sep 2007 14:52:26 +0200 wenzelm added some int constraints (ML_Parse.fix_ints not active here);
Fri, 03 Aug 2007 22:33:03 +0200 wenzelm named some CRITICAL sections;
Sun, 29 Jul 2007 14:30:05 +0200 wenzelm added list update;
Sat, 28 Jul 2007 20:40:29 +0200 wenzelm setmp: NAMED_CRITICAL;
Tue, 24 Jul 2007 19:44:35 +0200 wenzelm moved exception capture/release to structure Exn;
Mon, 23 Jul 2007 19:45:44 +0200 wenzelm eliminated transform_failure (to avoid critical section for main transactions);
Mon, 23 Jul 2007 16:45:00 +0200 wenzelm added setmp_noncritical;
Mon, 23 Jul 2007 14:06:12 +0200 wenzelm marked some CRITICAL sections (for multithreading);
Thu, 19 Jul 2007 23:18:43 +0200 wenzelm added undefined: 'a -> 'b;
Tue, 17 Jul 2007 13:19:21 +0200 wenzelm moved cd/pwd to ML compatibility layer (simplifies bootstrapping with Alice);
Tue, 10 Jul 2007 23:29:41 +0200 wenzelm simplified funpow, untabify;
Tue, 19 Jun 2007 23:15:54 +0200 wenzelm moved balanced tree operations to General/balanced_tree.ML;
Tue, 05 Jun 2007 15:17:02 +0200 haftmann moved generic algebra modules
Sun, 03 Jun 2007 23:16:48 +0200 wenzelm added flip (from General/basics.ML);
Sat, 02 Jun 2007 15:26:32 +0200 krauss added "plural : 'a -> 'a -> 'b list -> 'a" for convenient error msg construction
Wed, 04 Apr 2007 18:05:05 +0200 paulson find_first is just an alias
Wed, 04 Apr 2007 00:11:13 +0200 wenzelm removed obsolete scanwords (see obsolete tactic.ML:rename_tac for its only use);
Tue, 03 Apr 2007 19:24:11 +0200 wenzelm removed assert/deny (avoid clash with Alice keywords and confusion due to strict evaluation);
Wed, 28 Feb 2007 00:22:26 +0100 wenzelm gensym: removed bits of dead code;
Tue, 27 Feb 2007 11:10:35 +0100 paulson gensym no longer includes ' or _ in names (trailing _ is bad)
Wed, 07 Feb 2007 12:05:54 +0100 berghofe Made untabify function tail recursive.
Sun, 21 Jan 2007 13:26:44 +0100 nipkow Added lists-as-multisets functions
Sat, 30 Dec 2006 16:08:00 +0100 wenzelm removed conditional combinator;
Fri, 29 Dec 2006 18:46:02 +0100 wenzelm added signed_string_of_int (pruduces proper - instead of SML's ~);
Thu, 28 Dec 2006 14:30:40 +0100 wenzelm removed nospaces (Char.isSpace does not conform to Isabelle conventions);
Fri, 22 Dec 2006 20:58:14 +0100 paulson string primtives
Fri, 15 Dec 2006 00:08:14 +0100 wenzelm tuned -- accomodate Alice;
Tue, 28 Nov 2006 00:35:18 +0100 wenzelm simplified '?' operator;
Thu, 23 Nov 2006 00:52:07 +0100 wenzelm moved string_of_pair/list/option to structure ML_Syntax;
Thu, 16 Nov 2006 01:07:25 +0100 wenzelm moved some fundamental concepts to General/basics.ML;
Mon, 13 Nov 2006 15:43:13 +0100 haftmann added higher-order combinators for structured results
Sun, 05 Nov 2006 21:44:35 +0100 wenzelm removed obsolete first_duplicate;
Tue, 31 Oct 2006 09:29:11 +0100 haftmann cleanup
Wed, 11 Oct 2006 10:49:36 +0200 haftmann abandoned findrep
Tue, 10 Oct 2006 13:59:13 +0200 haftmann gen_rem(s) abandoned in favour of remove / subtract
Sat, 07 Oct 2006 01:31:10 +0200 wenzelm added the_single;
Wed, 04 Oct 2006 14:17:38 +0200 haftmann insert replacing ins ins_int ins_string
Tue, 12 Sep 2006 12:12:53 +0200 wenzelm tuned eq_list;
Thu, 31 Aug 2006 10:17:19 +0200 paulson Empty is better than Match
Tue, 08 Aug 2006 08:18:59 +0200 haftmann abandoned equal_list in favor for eq_list
Mon, 17 Jul 2006 15:16:17 +0200 webertj butlast removed (use fst o split_last instead)
Sat, 15 Jul 2006 18:17:47 +0200 webertj function butlast added
Wed, 12 Jul 2006 17:00:32 +0200 haftmann added chop_prefix
Tue, 11 Jul 2006 14:21:07 +0200 wenzelm replaced read_radixint by read_intinf;
Tue, 04 Jul 2006 19:49:57 +0200 wenzelm removed parrot comment;
Mon, 03 Jul 2006 16:25:10 +0200 webertj comment added
Tue, 06 Jun 2006 20:42:30 +0200 wenzelm added zip_options;
Sat, 20 May 2006 23:37:02 +0200 wenzelm removed obsolete partition (cf. List.partition);
Tue, 16 May 2006 13:01:27 +0200 wenzelm added divide_and_conquer combinator (by Amine Chaieb);
Tue, 09 May 2006 10:07:38 +0200 haftmann removed superfluous eq_ord
Mon, 08 May 2006 12:23:57 +0200 webertj string_of_option tuned
Fri, 05 May 2006 18:21:58 +0200 webertj string_of_... functions added
Tue, 02 May 2006 20:42:37 +0200 wenzelm sys_error: exception SYS_ERROR;
Sun, 30 Apr 2006 22:50:06 +0200 wenzelm added serial_string;
Thu, 27 Apr 2006 15:06:39 +0200 wenzelm renamed mapfilter to map_filter, made pervasive (again);
Wed, 26 Apr 2006 22:38:11 +0200 wenzelm removed splitAt (superceded by chop);
Tue, 25 Apr 2006 22:23:04 +0200 wenzelm made 'flat' pervasive (again);
Mon, 24 Apr 2006 16:35:30 +0200 haftmann moved coalesce to AList, added equality predicates to library
Thu, 13 Apr 2006 12:01:02 +0200 wenzelm export unflat (again);
Sun, 09 Apr 2006 18:51:17 +0200 wenzelm added coalesce;
Tue, 21 Mar 2006 12:18:09 +0100 wenzelm added subtract;
Tue, 14 Mar 2006 22:07:33 +0100 wenzelm added singleton;
Fri, 10 Mar 2006 15:33:48 +0100 haftmann renamed HOL + - * etc. to HOL.plus HOL.minus HOL.times etc.
Wed, 22 Feb 2006 10:18:17 +0100 haftmann abandoned merge_alists' in favour of generic AList.merge
Wed, 15 Feb 2006 21:34:55 +0100 wenzelm removed distinct, renamed gen_distinct to distinct;
Sat, 11 Feb 2006 17:17:45 +0100 wenzelm added chop (sane version of splitAt);
Fri, 10 Feb 2006 02:22:19 +0100 wenzelm tuned;
Tue, 07 Feb 2006 19:56:48 +0100 wenzelm removed eq-polymorphic duplicates;
Fri, 03 Feb 2006 23:12:31 +0100 wenzelm removed obsolete gen_ins/mem;
Thu, 19 Jan 2006 21:22:17 +0100 wenzelm tuned setmp;
Sat, 14 Jan 2006 17:14:14 +0100 wenzelm added exception ERROR, error, cat_error, sys_error, assert, deny, assert_all;
Tue, 03 Jan 2006 11:31:15 +0100 haftmann rearranged burrow_split to fold_burrow to allow composition with fold_map
Tue, 27 Dec 2005 15:24:23 +0100 haftmann added map_index
Thu, 22 Dec 2005 00:28:44 +0100 wenzelm tuned;
Wed, 21 Dec 2005 15:18:36 +0100 haftmann added eq_ord
Wed, 21 Dec 2005 13:25:20 +0100 haftmann discontinued unflat in favour of burrow and burrow_split
Tue, 20 Dec 2005 08:38:10 +0100 haftmann removed infix prefix, introduces burrow
Sat, 17 Dec 2005 01:00:38 +0100 wenzelm added sort_distinct;
Thu, 08 Dec 2005 20:16:17 +0100 wenzelm tuned;
Tue, 06 Dec 2005 16:07:10 +0100 haftmann added 'dig' combinator
Fri, 02 Dec 2005 16:04:48 +0100 haftmann added perhaps option combinator
Fri, 02 Dec 2005 08:06:59 +0100 haftmann introduced new map2, fold
Tue, 29 Nov 2005 23:00:03 +0100 wenzelm added nth_list;
Mon, 28 Nov 2005 13:43:56 +0100 haftmann added (curried) fold2
Thu, 10 Nov 2005 20:57:18 +0100 wenzelm curried multiply;
Mon, 31 Oct 2005 16:00:15 +0100 haftmann fold_index replacing foldln
Fri, 28 Oct 2005 16:35:40 +0200 haftmann cleaned up nth, nth_update, nth_map and nth_string functions
Fri, 21 Oct 2005 14:49:49 +0200 haftmann abandoned rational number functions in favor of General/rat.ML
Tue, 11 Oct 2005 13:28:06 +0200 wenzelm moved string_of_pid to ML-Systems;
Mon, 10 Oct 2005 15:35:29 +0200 paulson small tidy-up of utility functions
Tue, 04 Oct 2005 19:01:37 +0200 wenzelm minor tweaks for Poplog/ML;
Wed, 21 Sep 2005 11:49:31 +0200 wenzelm tuned;
Wed, 21 Sep 2005 10:32:24 +0200 haftmann removed assoc, overwrite
Tue, 20 Sep 2005 08:24:18 +0200 haftmann improved eq_fst and eq_snd, removed some deprecated stuff
Mon, 19 Sep 2005 16:39:27 +0200 haftmann removed some deprecated assocation list functions
Tue, 13 Sep 2005 22:19:25 +0200 wenzelm added exception EXCEPTION of exn * string;
Thu, 08 Sep 2005 16:08:50 +0200 haftmann added the_list, the_default
Mon, 05 Sep 2005 08:14:35 +0200 haftmann introduced binding priority 1 for linear combinators etc.
Sun, 28 Aug 2005 09:18:22 +0200 haftmann added 'these', removed assoc2
Thu, 25 Aug 2005 09:23:40 +0200 haftmann added ? combinator for conditional transformations
Thu, 18 Aug 2005 11:17:36 +0200 wenzelm added tap;
Tue, 16 Aug 2005 13:42:32 +0200 wenzelm tuned unsuffix/unprefix;
Mon, 08 Aug 2005 12:15:03 +0200 nipkow fixed typo in ratadd
Sun, 07 Aug 2005 12:28:10 +0200 nipkow added more rat functions
Mon, 01 Aug 2005 19:20:38 +0200 wenzelm tuned dict_ord;
Tue, 19 Jul 2005 17:21:50 +0200 wenzelm added has_duplicates;
Mon, 18 Jul 2005 14:10:11 +0200 haftmann reverted from fold_yield to fold_map
Thu, 14 Jul 2005 19:28:24 +0200 wenzelm tuned;
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