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Pike 8: Changes since Pike 7.8 (scratch area for future release notes) 
---------------------------------------------------------------------- 
-- New language features 
 
o local:: 
o variant 
    | class Test1 { int b(); } 
    | class Test2 { int a(); } 
    | 
    | class Foo 
    | { 
    |     variant string foo( object q ){ return "Genericfoo"; } 
    |     variant string foo( Test1 x ) { return "Test 1"; } 
    |     variant string foo( Test2 x ) { return "Test 2"; } 
    | 
    |     variant string bar( int(0..0) s ) { return "0"; } 
    |     variant float bar( int(1..1) s ) { return 1.0; } 
    |     variant int bar( int(2..2) s ) { return 2; } 
    | } 
 
o New typechecker 
 
o Support for ", ##__VA_ARGS__" cpp feature. 
 
o Allow '.' to be used as an index operator in the few places id did 
  not work before. 
 
o safe index 
  + X[?10]  --  index X with  10, or if X is null, evaulates to 0. 
  + X?->foo --  index X with foo, or if X is null, evaluates to 0. 
 
o Added the '?:' operator for compatibility with other C-like languages. 
  It is identical to '||' in pike. 
 
o && changed, when doing A && B, and A is false, keep A instead of 
  pushing 0. 
 
o X::this 
 
o dynamic macros (master()->add_predefine("MACRO()", callback) etc) 
    |   > master()->add_predefine("RND()", lambda( string arg1 ) { return random((int)arg1); }); 
    |   > RND(10); 
    |   (2) Result: 9 
    |   > cpp("RND(123)") 
    |   (3) Result: "19" 
    | 
    |   It can also be used to override the default builtin macros. If you 
    |   want "fun" debug information (not used for backtraces, but code using 
    |   __LINE__ will be confused): 
    | 
    |   > master()->add_predefine("__LINE__", lambda() { return random(4711); }); 
    |   > __LINE__; 
    |   (6) Result: 2593 
    |   > __LINE__; 
    |   (7) Result: 1780 
 
--- optimizations 
 
o New significantly faster block allocator 
o Power-of-two hashtables are now used for most hashtables 
o Significantly changd x86-32 and new AMD64/x86-64 machinecode 
  compilation backend 
o svalue type renumbering 
o string(x..y) (constant) types 
    | > typeof("foo"); 
    | (1) Result: string(102..111) 
   also used to optimize lower_case/upper_case search and 
   string_has_null etc. 
 
o Several other optimizations to execution speed has been done 
 
--- removed stuff 
o Removed bundles 
o Removed facets 
o The built in sandbox is now deprecated. 
o Bignums are now a required language feature, it is no longer 
  possible to build a pike without them 
o Tools.PEM and Tools.X409 deprecated (use the corresponding modules in Standards.) 
o The old 'files' module was renamed to _Stdio 
o Locale.Charset -> Charset 
o Renamed GTK to GTK1, added a GTK.pmod that is either GTK2 (if 
  available) or GTK1 (if there is no GTK2, but GTK1 is available). 
 
-- new modules 
o Added ADT.CritBit module 
  Mapping-like key-sorted data structures for string, int and float-keys 
  (ADT.CritBit.Tree, ADT.CritBit.IntTree, ADT.CritBit.FloatTree). Implemented 
  in C. 
o Standards.BSON 
  A new module for working with BSON serialized data. 
  See http://bsonspec.org/ 
o Crypto.CAMELLIA 
o System.TM 
    Low-level wrapper for struct tm. 
 
    This can be used to do (very) simple calendar operations. It is, 
    as it stands, not 100% correct unless the local time is set to 
    GMT, and does mirror functionality already available in gmtime() 
    and localtime() and friends, but in a (perhaps) easier to use API. 
 
o Added module Geography.GeoIP 
 
o Protocols.WebSocket 
  An implementation of the WebSocket (RFC 6455) standard. 
o Image.WebP. 
o Serializer.Encodable (automatic _encode/_decode) 
o Serializer 
o Filesystem.Monitor (System.Inotify, System.FSEvents) 
o Mysql.SqlTable 
o Parser.CSV 
o ZXID 
o Bz2 Bz2.File("path"), line_iterator 
o Git module 
o Val.{true,false,null} 
o SDL.Music 
 
-- UNSORTED 
 
o decode_value now throws the error object Error.DecodeError. 
  Useful to catch format errors in the decode string. 
 
o Debug.pp_object_usage() 
  Pretty print debug information, useful to get debug information 
  about object counts and memory usage in pike applications. 
 
  Uses the new _object_size lfun, if present in objects, to account 
  for RAM-usage in C-objects that allocate their own memory. 
 
 
o Several OS/2 and windows compilation fixes 
 
o Mysql - Support more modern client libraries (incl. MariaDB) 
 
o Standards.PEM: Added some support for encrypted PEM files 
 
o Nettle refactored 
o String.Buffer 
  + Added buffer->add(buffer) support 
  + Added buffer->sprintf() 
  + Added adat() 
o pike -x benchmark output format changed 
o Protocols.DNS 
  + Prevent endless loops in maliciously crafted domain names. 
  + Add QTYPE T_ANY to DNS enum EntryType in DNS.pmod. 
  + Handle truncated labels 
  + TCP client and server support 
o Thread no longer inherits Thread.Thread (aka thread_create) 
o Thread.Farm now might work 
o Stdio.UDP 
  + added ipv6 multicast support 
  + added set_buffer 
 
o sprintf("%H") and sscanf("%H") (new) sscanf("%n") (now documented, existed before (%!<X> modifier, used by optimizer)) 
o Image.JPEG.exif_decode 
o Process.daemon 
    The daemon() function is for programs wishing to detach themselves 
    from the controlling terminal and run in the background as system 
    daemons. 
o Crypto.PGP - support more hash functions. 
o String.levenshtein_distance() 
    That function calculates the Levenshtein distance between two 
    strings.  The Levenshtein distance describes the minimum number of 
    edit operations insert, delete or substitue a character to get 
    from one string to the other. 
 
    The algorithm can be used in approximate string matching to find 
    matches for a short string in many longer texts, when a small 
    number of differences is expected. 
o Unicode databases updated to 6.2.0 
o Timezone databases updated to tzdata2013d 
o inherit ::this_program 
    This syntax refers to the previous definition of the current class 
    in its parent, and is typically used with inherit like: 
 
      inherit Foo; 
 
      // Override the Bar inherited from Foo. 
      class Bar { 
        // Bar is based on the implementation of Bar in Foo. 
        inherit ::this_program; 
        // ... 
      } 
o precompile 
  + inherit "identifier" 
    -- inherit the program returned by calling master()->resolve() on 
       the specified identifier. Useful to inherit code written in pike. 
  + cpp prefix feature  #cmod_define #cmod_if etc 
o System.sync() 
o System.getloadavg() 
o Stdio.File()->send/receive[_fd] 
o The Search module has seen several fixes 
o Standalone tools added: 
  autodoc_to_html       AutoDoc XML to HTML converter. 
  autodoc_to_split_html AutoDoc XML to splitted HTML converter. 
  git_export_autodoc    Exports a stream of autodoc.xml suitable for git-fast-import. 
  pv                    Pike image viewer (diet). 
 
o Lots of GTK2 fixes 
o Crypto.crypt_hash() 
o Image.JPEG.decode now has basic CMYK/YCCK support 
o visibility=hidden default (PMOD_EXPORT now also needed on unix) 
o Fixed units in pike --help=kladdkaka 
o clang compilation fixes (bignum overflow checks, misc) 
o Various coverity fixes 
 
 
o SNI client extension support for SSL (Server Name Indicator) 
o System.get_home + System.get_user 
   (mostly) Cross-platform ways to get username and home directory 
o System.AllocConsole, System.FreeConsole and System.AttachConsole for NT 
o Process - forkd 
 
 
o generic ipv6 fixes, ipv6 mapped ipv4 addresses 
o Async Protocols.SNMP client 
o MacOSX CoreFoundation support in the backend 
o lots of autodoc fixes 
o Some Parser.SGML fixes 
o Readline tries to set the charset to the terminal charset 
o Fixes to Process.run, Process.spawn_pike and friends. 
o glob( array, X ) 
o AES support added to SSL 
o SSL now supports TLS 1.0 (SSL 3.1) and TLS 1.1 
o predef::types (seems somewhat broken, or is it intended at types(({1,2,3})) returns ({ mixed,mixed,mixed})?) 
o Builtin._get_setter / Builtin.Setter 
o Parser.XML.Tree fixes 
o New charsets 
   A lot of ISO-IR charsets added: 
 
   9-1, 9-2, 31, 232, 234, 231 (aka ANSI/NISO Z39.46, aka ANSEL) 230 
   (aka TDS 565) 225 (SR 14111:1998), 197/209 (sami) 208 (IS 434:1997) 
   207 (IS 433:1996), 204,205 and 206 (aka 8859-1, 8859-4 and 8859-13 
   with euro) 201, 200, 138 (ECMA-121) 198 (ISO 8859-8:1999) 182, 181, 
   189 (TCVN 5712:1993, aka VSCII) 167, 166 (aka TIS 620-2533 (1990)), 
   164, 160, 151 (NC 99-10:81), 68 (APL), 59 (CODAR-U), 202 (KPS 
   9566-97). Fixed CSA_Z242.4 
o Fixes to the HTTP client in Protocols.HTTP. 
o dtrace support (on macosX at least?) 
o Blowfish and Serpent support fixed in Nettle