walking.or.kr:80

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File Name : HISTORY

HISTORY for Lua 5.1

* Changes from version 5.0 to 5.1
  -------------------------------
  Language:
  + new module system.
  + new semantics for control variables of fors.
  + new semantics for setn/getn.
  + new syntax/semantics for varargs.
  + new long strings and comments.
  + new `mod' operator (`%')
  + new length operator #t
  + metatables for all types
  API:
  + new functions: lua_createtable, lua_get(set)field, lua_push(to)integer.
  + user supplies memory allocator (lua_open becomes lua_newstate).
  + luaopen_* functions must be called through Lua.
  Implementation:
  + new configuration scheme via luaconf.h.
  + incremental garbage collection.
  + better handling of end-of-line in the lexer.
  + fully reentrant parser (new Lua function `load')
  + better support for 64-bit machines.
  + native loadlib support for Mac OS X.
  + standard distribution in only one library (lualib.a merged into lua.a)

* Changes from version 4.0 to 5.0
  -------------------------------
  Language:
  + lexical scoping.
  + Lua coroutines.
  + standard libraries now packaged in tables.
  + tags replaced by metatables and tag methods replaced by metamethods,
    stored in metatables.
  + proper tail calls.
  + each function can have its own global table, which can be shared.
  + new __newindex metamethod, called when we insert a new key into a table.
  + new block comments: --[[ ... ]].
  + new generic for.
  + new weak tables.
  + new boolean type.
  + new syntax "local function".
  + (f()) returns the first value returned by f.
  + {f()} fills a table with all values returned by f.
  + \n ignored in [[\n .
  + fixed and-or priorities.
  + more general syntax for function definition (e.g. function a.x.y:f()...end).
  + more general syntax for function calls (e.g. (print or write)(9)).
  + new functions (time/date, tmpfile, unpack, require, load*, etc.).
  API:
  + chunks are loaded by using lua_load; new luaL_loadfile and luaL_loadbuffer.
  + introduced lightweight userdata, a simple "void*" without a metatable.
  + new error handling protocol: the core no longer prints error messages;
    all errors are reported to the caller on the stack.
  + new lua_atpanic for host cleanup.
  + new, signal-safe, hook scheme.
  Implementation:
  + new license: MIT.
  + new, faster, register-based virtual machine.
  + support for external multithreading and coroutines.
  + new and consistent error message format.
  + the core no longer needs "stdio.h" for anything (except for a single
    use of sprintf to convert numbers to strings).
  + lua.c now runs the environment variable LUA_INIT, if present. It can
    be "@filename", to run a file, or the chunk itself.
  + support for user extensions in lua.c.
    sample implementation given for command line editing.
  + new dynamic loading library, active by default on several platforms.
  + safe garbage-collector metamethods.
  + precompiled bytecodes checked for integrity (secure binary dostring).
  + strings are fully aligned.
  + position capture in string.find.
  + read('*l') can read lines with embedded zeros.

* Changes from version 3.2 to 4.0
  -------------------------------
  Language:
  + new "break" and "for" statements (both numerical and for tables).
  + uniform treatment of globals: globals are now stored in a Lua table.
  + improved error messages.
  + no more '$debug': full speed *and* full debug information.
  + new read form: read(N) for next N bytes.
  + general read patterns now deprecated.
    (still available with -DCOMPAT_READPATTERNS.)
  + all return values are passed as arguments for the last function
    (old semantics still available with -DLUA_COMPAT_ARGRET)
  + garbage collection tag methods for tables now deprecated.
  + there is now only one tag method for order.
  API:
  + New API: fully re-entrant, simpler, and more efficient.
  + New debug API.
  Implementation:
  + faster than ever: cleaner virtual machine and new hashing algorithm.
  + non-recursive garbage-collector algorithm.
  + reduced memory usage for programs with many strings.
  + improved treatment for memory allocation errors.
  + improved support for 16-bit machines (we hope).
  + code now compiles unmodified as both ANSI C and C++.
  + numbers in bases other than 10 are converted using strtoul.
  + new -f option in Lua to support #! scripts.
  + luac can now combine text and binaries.

* Changes from version 3.1 to 3.2
  -------------------------------
  + redirected all output in Lua's core to _ERRORMESSAGE and _ALERT.
  + increased limit on the number of constants and globals per function
    (from 2^16 to 2^24).
  + debugging info (lua_debug and hooks) moved into lua_state and new API
    functions provided to get and set this info.
  + new debug lib gives full debugging access within Lua.
  + new table functions "foreachi", "sort", "tinsert", "tremove", "getn".
  + new io functions "flush", "seek".

* Changes from version 3.0 to 3.1
  -------------------------------
  + NEW FEATURE: anonymous functions with closures (via "upvalues").
  + new syntax:
    - local variables in chunks.
    - better scope control with DO block END.
    - constructors can now be also written: { record-part; list-part }.
    - more general syntax for function calls and lvalues, e.g.:
      f(x).y=1
      o:f(x,y):g(z)
      f"string" is sugar for f("string")
  + strings may now contain arbitrary binary data (e.g., embedded zeros).
  + major code re-organization and clean-up; reduced module interdependecies.
  + no arbitrary limits on the total number of constants and globals.
  + support for multiple global contexts.
  + better syntax error messages.
  + new traversal functions "foreach" and "foreachvar".
  + the default for numbers is now double.
    changing it to use floats or longs is easy.
  + complete debug information stored in pre-compiled chunks.
  + sample interpreter now prompts user when run interactively, and also
    handles control-C interruptions gracefully.

* Changes from version 2.5 to 3.0
  -------------------------------
  + NEW CONCEPT: "tag methods".
    Tag methods replace fallbacks as the meta-mechanism for extending the
    semantics of Lua. Whereas fallbacks had a global nature, tag methods
    work on objects having the same tag (e.g., groups of tables).
    Existing code that uses fallbacks should work without change.
  + new, general syntax for constructors {[exp] = exp, ... }.
  + support for handling variable number of arguments in functions (varargs).
  + support for conditional compilation ($if ... $else ... $end).
  + cleaner semantics in API simplifies host code.
  + better support for writing libraries (auxlib.h).
  + better type checking and error messages in the standard library.
  + luac can now also undump.

* Changes from version 2.4 to 2.5
  -------------------------------
  + io and string libraries are now based on pattern matching;
    the old libraries are still available for compatibility
  + dofile and dostring can now return values (via return statement)
  + better support for 16- and 64-bit machines
  + expanded documentation, with more examples

* Changes from version 2.2 to 2.4
  -------------------------------
  + external compiler creates portable binary files that can be loaded faster
  + interface for debugging and profiling
  + new "getglobal" fallback
  + new functions for handling references to Lua objects
  + new functions in standard lib
  + only one copy of each string is stored
  + expanded documentation, with more examples

* Changes from version 2.1 to 2.2
  -------------------------------
  + functions now may be declared with any "lvalue" as a name
  + garbage collection of functions
  + support for pipes

* Changes from version 1.1 to 2.1
  -------------------------------
  + object-oriented support
  + fallbacks
  + simplified syntax for tables
  + many internal improvements

(end of HISTORY)

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Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2018-07-24 06:29:35
..	dir	-	root/root	0755	2024-05-04 01:43:04
COPYRIGHT	text/plain	1.49 KB	root/root	0644	2008-01-17 05:59:34
HISTORY	text/plain	7.72 KB	root/root	0644	2007-03-26 04:05:16
README	text/plain	1.35 KB	root/root	0644	2007-03-29 12:19:12
amazon.gif	image/gif	797 B	root/root	0644	2005-07-27 07:58:58
contents.html	text/html	21.73 KB	root/root	0644	2008-01-19 03:24:29
cover.png	image/png	3.23 KB	root/root	0644	2006-08-21 07:55:25
logo.gif	image/gif	4.13 KB	root/root	0644	2001-10-23 12:39:15
lua.css	text/plain	588 B	root/root	0644	2006-12-02 03:13:13
lua.html	text/html	3.86 KB	root/root	0644	2006-02-07 04:38:49
luac.html	text/html	3.8 KB	root/root	0644	2006-02-12 11:46:37
manual.css	text/plain	120 B	root/root	0644	2007-07-10 02:11:03
manual.html	text/html	248.66 KB	root/root	0644	2008-08-18 04:25:48
readme.html	text/html	833 B	root/root	0644	2008-08-12 05:46:10