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Diffstat (limited to 'lib/stdlib/doc/src/notes.xml')
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1 files changed, 890 insertions, 35 deletions
diff --git a/lib/stdlib/doc/src/notes.xml b/lib/stdlib/doc/src/notes.xml index 15e6fdfa9f..5d4f9d912f 100644 --- a/lib/stdlib/doc/src/notes.xml +++ b/lib/stdlib/doc/src/notes.xml @@ -8,16 +8,17 @@ <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> - The contents of this file are subject to the Erlang Public License, - Version 1.1, (the "License"); you may not use this file except in - compliance with the License. You should have received a copy of the - Erlang Public License along with this software. If not, it can be - retrieved online at http://www.erlang.org/. - - Software distributed under the License is distributed on an "AS IS" - basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See - the License for the specific language governing rights and limitations - under the License. + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. </legalnotice> @@ -30,6 +31,853 @@ </header> <p>This document describes the changes made to the STDLIB application.</p> +<section><title>STDLIB 2.8</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix evaluation in matching of bound map key variables in + the interpreter.</p> + <p> + Prior to this patch, the following code would not + evaluate: <c>X = key,(fun(#{X := value}) -> true + end)(#{X => value})</c></p> + <p> + Own Id: OTP-13218</p> + </item> + <item> + <p> Fix <c>erl_eval</c> not using non-local function + handler. </p> + <p> + Own Id: OTP-13228 Aux Id: ERL-32 </p> + </item> + <item> + <p> The Erlang Code Linter no longer crashes if there is + a <c>-deprecated()</c> attribute but no <c>-module()</c> + declaration. </p> + <p> + Own Id: OTP-13230 Aux Id: ERL-62 </p> + </item> + <item> + <p> + The timestamp in the result returned by <c>dets:info(Tab, + safe_fixed)</c> was unintentionally broken as a result of + the time API rewrites in OTP 18.0. This has now been + fixed.</p> + <p> + Own Id: OTP-13239 Aux Id: OTP-11997 </p> + </item> + <item> + <p>A rare race condition in <c>beam_lib</c> when using + encrypted abstract format has been eliminated.</p> + <p> + Own Id: OTP-13278</p> + </item> + <item> + <p> + Improved maps:with/2 and maps:without/2 algorithms</p> + <p> + The new implementation speeds up the execution + significantly for all sizes of input.</p> + <p> + Own Id: OTP-13376</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Time warp safety improvements.</p> + <p> + Introduced the options <c>monotonic_timestamp</c>, and + <c>strict_monotonic_timestamp</c> to the trace, + sequential trace, and system profile functionality. This + since the already existing <c>timestamp</c> option is not + time warp safe.</p> + <p> + Introduced the option <c>safe_fixed_monotonic_time</c> to + <c>ets:info/2</c> and <c>dets:info/2</c>. This since the + already existing <c>safe_fixed</c> option is not time + warp safe.</p> + <p> + Own Id: OTP-13222 Aux Id: OTP-11997 </p> + </item> + <item> + <p> + In the shell Ctrl+W (delete word) will no longer consider + "." as being part of a word.</p> + <p> + Own Id: OTP-13281</p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.7</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p>The Erlang Pretty Printer uses <c>::</c> for function + type constraints.</p> <p>A bug concerning pretty printing + of annotated type union elements in map pair types has + been fixed.</p> <p>Some minor issues regarding the + documentation of types and specs have been corrected.</p> + <p> + Own Id: OTP-13084</p> + </item> + <item> + <p> The shell command <c>rp</c> prints strings as lists + of integers if pretty printing of lists is set to + <c>false</c>. </p> + <p> + Own Id: OTP-13145</p> + </item> + <item> + <p> + The shell would crash if a bit syntax expression with + conflicting types were given (e.g. if a field type was + given as '<c>integer-binary</c>'). (Thanks to Aleksei + Magusev for reporting this bug.)</p> + <p> + Own Id: OTP-13157</p> + </item> + <item> + <p>The <c>rand:export_seed/0</c> would never return + '<c>undefined</c>' even if no seed has previously been + created. Fixed to return '<c>undefined</c>' if there is + no seed in the process dictionary.</p> + <p> + Own Id: OTP-13162</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Add support for the Delete, Home and End keys in the + Erlang shell.</p> + <p> + Own Id: OTP-13032</p> + </item> + <item> + <p><c>beam_lib:all_chunks/1</c> and + <c>beam_lib:build_module/1</c> have been documented.</p> + <p> + Own Id: OTP-13063</p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.6</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> In OTP 18.0, <c>qlc</c> does not handle syntax errors + well. This bug has been fixed. </p> + <p> + Own Id: OTP-12946</p> + </item> + <item> + <p> + Optimize zip:unzip/2 when uncompressing to memory.</p> + <p> + Own Id: OTP-12950</p> + </item> + <item> + <p> + The <c>stdlib</c> reference manual is updated to show + correct information about the return value of + <c>gen_fsm:reply/2</c>.</p> + <p> + Own Id: OTP-12973</p> + </item> + <item> + <p>re:split2,3 and re:replace/3,4 now correctly handles + pre-compiled patterns that have been compiled using the + '<c>unicode</c>' option.</p> + <p> + Own Id: OTP-12977</p> + </item> + <item> + <p> + Export <c>shell:catch_exception/1</c> as documented.</p> + <p> + Own Id: OTP-12990</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p>A mechanism for limiting the amount of text that the + built-in error logger events will produce has been + introduced. It is useful for limiting both the size of + log files and the CPU time used to produce them.</p> + <p>This mechanism is experimental in the sense that it + may be changed if it turns out that it does not solve the + problem it is supposed to solve. In that case, there may + be backward incompatible improvements to this + mechanism.</p> + <p>See the documentation for the config parameter + <c>error_logger_format_depth</c> in the Kernel + application for information about how to turn on this + feature.</p> + <p> + Own Id: OTP-12864</p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.5</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Fix handling of single dot in filename:join/2</p> + <p> + The reference manual says that filename:join(A,B) is + equivalent to filename:join([A,B]). In some rare cases + this turns out not to be true. For example:</p> + <p> + <c>filename:join("/a/.","b") -> "/a/./b"</c> vs + <c>filename:join(["/a/.","b"]) -> "/a/b"</c>.</p> + <p> + This has been corrected. A single dot is now only kept if + it occurs at the very beginning or the very end of the + resulting path.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-12158</p> + </item> + <item> + <p> + The undocumented option <c>generic_debug</c> for + <c>gen_server</c> has been removed.</p> + <p> + Own Id: OTP-12183</p> + </item> + <item> + <p> + erl_lint:icrt_export/4 has been rewritten to make the + code really follow the scoping rules of Erlang, and not + just in most situations by accident.</p> + <p> + Own Id: OTP-12186</p> + </item> + <item> + <p> + Add 'trim_all' option to binary:split/3</p> + <p> + This option can be set to remove _ALL_ empty parts of the + result of a call to binary:split/3.</p> + <p> + Own Id: OTP-12301</p> + </item> + <item> + <p> Correct orddict(3) regarding evaluation order of + <c>fold()</c> and <c>map()</c>. </p> + <p> + Own Id: OTP-12651 Aux Id: seq12832 </p> + </item> + <item> + <p> + Correct <c>maps</c> module error exceptions </p> + <p> + Bad input to maps module function will now yield the + following exceptions:</p> + <list> <item>{badmap, NotMap}, or </item> <item>badarg.</item> + </list> + <p> + Own Id: OTP-12657</p> + </item> + <item> + <p> + It is now possible to paste text in JCL mode (using + Ctrl-Y) that has been copied in the previous shell + session. Also a bug that caused the JCL mode to crash + when pasting text has been fixed.</p> + <p> + Own Id: OTP-12673</p> + </item> + <item> + <p> + Add <c>uptime()</c> shell command.</p> + <p> + Own Id: OTP-12752</p> + </item> + <item> + <p> + Cache nowarn_bif_clash functions in erl_lint.</p> + <p> + This patch stores nowarn_bif_clash in the lint record. By + using erlc +'{eprof,lint_module}' when compiling the + erlang parser, we noticed the time spent on + nowarn_function/2 reduced from 30% to 0.01%.</p> + <p> + Own Id: OTP-12754</p> + </item> + <item> + <p> + Optimize the Erlang Code Linter by using the cached + filename information.</p> + <p> + Own Id: OTP-12772</p> + </item> + <item> + <p> + If a child of a simple_one_for_one returns ignore from + its start function no longer store the child for any + restart type. It is not possible to restart or delete the + child because the supervisor is a simple_one_for_one.</p> + <p> + Own Id: OTP-12793</p> + </item> + <item> + <p> + Make <c>ets:file2tab</c> preserve enabled + <c>read_concurrency</c> and <c>write_concurrency</c> + options for tables.</p> + <p> + Own Id: OTP-12814</p> + </item> + <item> + <p> + There are many cases where user code needs to be able to + distinguish between a socket that was closed normally and + one that was aborted. Setting the option + {show_econnreset, true} enables the user to receive + ECONNRESET errors on both active and passive sockets.</p> + <p> + Own Id: OTP-12841</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Allow maps for supervisor flags and child specs</p> + <p> + Earlier, supervisor flags and child specs were given as + tuples. While this is kept for backwards compatibility, + it is now also allowed to give these parameters as maps, + see <seealso + marker="stdlib:supervisor#sup_flags">sup_flags</seealso> + and <seealso + marker="stdlib:supervisor#child_spec">child_spec</seealso>.</p> + <p> + Own Id: OTP-11043</p> + </item> + <item> + <p> + A new system message, <c>terminate</c>, is added. This + can be sent with <c>sys:terminate/2,3</c>. If the + receiving process handles system messages properly it + will terminate shortly after receiving this message.</p> + <p> + The new function <c>proc_lib:stop/1,3</c> utilizes this + new system message and monitors the receiving process in + order to facilitate a synchronous stop mechanism for + 'special processes'.</p> + <p> + <c>proc_lib:stop/1,3</c> is used by the following + functions:</p> + <list> <item><c>gen_server:stop/1,3</c> (new)</item> + <item><c>gen_fsm:stop/1,3</c> (new)</item> + <item><c>gen_event:stop/1,3</c> (modified to be + synchronous)</item> <item><c>wx_object:stop/1,3</c> + (new)</item> </list> + <p> + Own Id: OTP-11173 Aux Id: seq12353 </p> + </item> + <item> + <p> + Remove the <c>pg</c> module, which has been deprecated + through OTP-17, is now removed from the STDLIB + application. This module has been marked experimental for + more than 15 years, and has largely been superseded by + the <c>pg2</c> module from the Kernel application.</p> + <p> + Own Id: OTP-11907</p> + </item> + <item> + <p> + New BIF: <c>erlang:get_keys/0</c>, lists all keys + associated with the process dictionary. Note: + <c>erlang:get_keys/0</c> is auto-imported.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-12151 Aux Id: seq12521 </p> + </item> + <item> + <p> Add three new functions to <c>io_lib</c>-- + <c>scan_format/2</c>, <c>unscan_format/1</c>, and + <c>build_text/1</c>-- which expose the parsed form of the + format control sequences to make it possible to easily + modify or filter the input to <c>io_lib:format/2</c>. + This can e.g. be used in order to replace unbounded-size + control sequences like <c>~w</c> or <c>~p</c> with + corresponding depth-limited <c>~W</c> and <c>~P</c> + before doing the actual formatting. </p> + <p> + Own Id: OTP-12167</p> + </item> + <item> + <p> Introduce the <c>erl_anno</c> module, an abstraction + of the second element of tokens and tuples in the + abstract format. </p> + <p> + Own Id: OTP-12195</p> + </item> + <item> + <p> + Support variables as Map keys in expressions and patterns</p> + <p>Erlang will accept any expression as keys in Map + expressions and it will accept literals or bound + variables as keys in Map patterns.</p> + <p> + Own Id: OTP-12218</p> + </item> + <item> + <p> The last traces of Mnemosyne Rules have been removed. + </p> + <p> + Own Id: OTP-12257</p> + </item> + <item> + <p> + Properly support maps in match_specs</p> + <p> + Own Id: OTP-12270</p> + </item> + <item> + <p> + New function <c>ets:take/2</c>. Works the same as + <c>ets:delete/2</c> but also returns the deleted + object(s).</p> + <p> + Own Id: OTP-12309</p> + </item> + <item> + <p><c>string:tokens/2</c> is somewhat faster, especially + if the list of separators only contains one separator + character.</p> + <p> + Own Id: OTP-12422 Aux Id: seq12774 </p> + </item> + <item> + <p>The documentation of the Abstract Format (in the ERTS + User's Guide) has been updated with types and + specification. (Thanks to Anthony Ramine.) </p> <p> The + explicit representation of parentheses used in types of + the abstract format has been removed. Instead the new + functions <c>erl_parse:type_inop_prec()</c> and + <c>erl_parse:type_preop_prec()</c> can be used for + inserting parentheses where needed. </p> + <p> + Own Id: OTP-12492</p> + </item> + <item> + <p> + Prevent zip:zip_open/[12] from leaking file descriptors + if parent process dies.</p> + <p> + Own Id: OTP-12566</p> + </item> + <item> + <p> + Add a new random number generator, see <c>rand</c> + module. It have better characteristics and an improved + interface.</p> + <p> + Own Id: OTP-12586 Aux Id: OTP-12501, OTP-12502 </p> + </item> + <item> + <p><c>filename:split/1</c> when given an empty binary + will now return an empty list, to make it consistent with + return value when given an empty list.</p> + <p> + Own Id: OTP-12716</p> + </item> + <item> + <p> + Add <c>sync</c> option to <c>ets:tab2file/3</c>.</p> + <p> + Own Id: OTP-12737 Aux Id: seq12805 </p> + </item> + <item> + <p> Add functions <c>gb_sets:iterator_from()</c> and + <c>gb_trees:iterator_from()</c>. (Thanks to Kirill + Kinduk.) </p> + <p> + Own Id: OTP-12742</p> + </item> + <item> + <p> + Add <c>maps:filter/2</c> to maps module.</p> + <p> + Own Id: OTP-12745</p> + </item> + <item> + <p> + Change some internal data structures to Maps in order to + speed up compilation time. Measured speed up is around + 10%-15%.</p> + <p> + Own Id: OTP-12774</p> + </item> + <item> + <p> Update <c>orddict</c> to use parameterized types and + specs. (Thanks to UENISHI Kota.) </p> + <p> + Own Id: OTP-12785</p> + </item> + <item> + <p>The assert macros in <c>eunit</c> has been moved out + to <c>stdlib/include/assert.hrl</c>. This files get + included by <c>eunit.hrl</c>. Thus, nothing changes for + eunit users, but the asserts can now also be included + separately.</p> + <p> + Own Id: OTP-12808</p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.4</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Behaviour of character types \d, \w and \s has always + been to not match characters with value above 255, not + 128, i.e. they are limited to ISO-Latin-1 and not ASCII</p> + <p> + Own Id: OTP-12521</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + c:m/1 now displays the module's MD5 sum.</p> + <p> + Own Id: OTP-12500</p> + </item> + <item> + <p> + Make ets:i/1 handle binary input from IO server.</p> + <p> + Own Id: OTP-12550</p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + The documentation of string:tokens/2 now explicitly + specifies that adjacent separator characters do not give + any empty strings in the resulting list of tokens.</p> + <p> + Own Id: OTP-12036</p> + </item> + <item> + <p> + Fix broken deprecation warnings in ssh application</p> + <p> + Own Id: OTP-12187</p> + </item> + <item> + <p> + Maps: Properly align union typed assoc values in + documentation</p> + <p> + Own Id: OTP-12190</p> + </item> + <item> + <p> + Fix filelib:wildcard/2 when 'Cwd' ends with a dot</p> + <p> + Own Id: OTP-12212</p> + </item> + <item> + <p> + Allow <c>Name/Arity</c> syntax in maps values inside + attributes.</p> + <p> + Own Id: OTP-12213</p> + </item> + <item> + <p> + Fix edlin to correctly save text killed with ctrl-u. + Prior to this fix, entering text into the Erlang shell + and then killing it with ctrl-u followed by yanking it + back with ctrl-y would result in the yanked text being + the reverse of the original killed text.</p> + <p> + Own Id: OTP-12224</p> + </item> + <item> + <p> + If a callback function was terminated with exit/1, there + would be no stack trace in the ERROR REPORT produced by + gen_server. This has been corrected.</p> + <p> + To keep the backwards compatibility, the actual exit + reason for the process is not changed.</p> + <p> + Own Id: OTP-12263 Aux Id: seq12733 </p> + </item> + <item> + <p> + Warnings produced by <c>ms_transform</c> could point out + the wrong line number.</p> + <p> + Own Id: OTP-12264</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Supports tar file creation on other media than file + systems mounted on the local machine.</p> + <p> + The <c>erl_tar</c> api is extended with + <c>erl_tar:init/3</c> that enables usage of user provided + media storage routines. A ssh-specific set of such + routines is hidden in the new function + <c>ssh_sftp:open_tar/3</c> to simplify creating a tar + archive on a remote ssh server.</p> + <p> + A chunked file reading option is added to + <c>erl_tar:add/3,4</c> to save memory on e.g small + embedded systems. The size of the slices read from a file + in that case can be specified.</p> + <p> + Own Id: OTP-12180 Aux Id: seq12715 </p> + </item> + <item> + <p> + I/O requests are optimized for long message queues in the + calling process.</p> + <p> + Own Id: OTP-12315</p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + The type spec of the FormFunc argument to + sys:handle_debug/4 was erroneously pointing to dbg_fun(). + This is now corrected and the new type is format_fun().</p> + <p> + Own Id: OTP-11800</p> + </item> + <item> + <p> + Behaviors such as gen_fsm and gen_server should always + invoke format_status/2 before printing the state to the + logs.</p> + <p> + Own Id: OTP-11967</p> + </item> + <item> + <p> The documentation of <c>dets:insert_new/2</c> has + been corrected. (Thanks to Alexei Sholik for reporting + the bug.) </p> + <p> + Own Id: OTP-12024</p> + </item> + <item> + <p> + Printing a term with io_lib:format and control sequence + w, precision P and field width F, where F< P would + fail in one of the two following ways:</p> + <p> + 1) If P < printed length of the term, an infinite loop + would be entered, consuming all available memory.</p> + <p> + 2) If P >= printed length of the term, an exception + would be raised.</p> + <p> + These two problems are now corrected.</p> + <p> + Own Id: OTP-12041</p> + </item> + <item> + <p> + The documentation of <c>maps:values/1</c> has been + corrected.</p> + <p> + Own Id: OTP-12055</p> + </item> + <item> + <p> + Expand shell functions in map expressions.</p> + <p> + Own Id: OTP-12063</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Add maps:with/2</p> + <p> + Own Id: OTP-12137</p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.1.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + OTP-11850 fixed filelib:wildcard/1 to work with broken + symlinks. This correction, however, introduced problems + since symlinks were no longer followed for functions like + filelib:ensure_dir/1, filelib:is_dir/1, + filelib:file_size/1, etc. This is now corrected.</p> + <p> + Own Id: OTP-12054 Aux Id: seq12660 </p> + </item> + </list> + </section> + +</section> + +<section><title>STDLIB 2.1</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p><c>filelib:wildcard("broken_symlink")</c> would return + an empty list if "broken_symlink" was a symlink that did + not point to an existing file.</p> + <p> + Own Id: OTP-11850 Aux Id: seq12571 </p> + </item> + <item> + <p><c>erl_tar</c> can now handle files names that contain + Unicode characters. See "UNICODE SUPPORT" in the + documentation for <c>erl_tar</c>.</p> + <p>When creating a tar file, <c>erl_tar</c> would + sometime write a too short end of tape marker. GNU tar + would correctly extract files from such tar file, but + would complain about "A lone zero block at...".</p> + <p> + Own Id: OTP-11854</p> + </item> + <item> + <p> When redefining and exporting the type <c>map()</c> + the Erlang Code Linter (<c>erl_lint</c>) erroneously + emitted an error. This bug has been fixed. </p> + <p> + Own Id: OTP-11872</p> + </item> + <item> + <p> + Fix evaluation of map updates in the debugger and + erl_eval</p> + <p> + Reported-by: José Valim</p> + <p> + Own Id: OTP-11922</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p>The following native functions now bump an appropriate + amount of reductions and yield when out of + reductions:</p> <list> + <item><c>erlang:binary_to_list/1</c></item> + <item><c>erlang:binary_to_list/3</c></item> + <item><c>erlang:bitstring_to_list/1</c></item> + <item><c>erlang:list_to_binary/1</c></item> + <item><c>erlang:iolist_to_binary/1</c></item> + <item><c>erlang:list_to_bitstring/1</c></item> + <item><c>binary:list_to_bin/1</c></item> </list> + <p>Characteristics impact:</p> <taglist> + <tag>Performance</tag> <item>The functions converting + from lists got a performance loss for very small lists, + and a performance gain for very large lists.</item> + <tag>Priority</tag> <item>Previously a process executing + one of these functions effectively got an unfair priority + boost. This priority boost depended on the input size. + The larger the input was, the larger the priority boost + got. This unfair priority boost is now lost. </item> + </taglist> + <p> + Own Id: OTP-11888</p> + </item> + <item> + <p> + Add <c>maps:get/3</c> to maps module. The function will + return the supplied default value if the key does not + exist in the map.</p> + <p> + Own Id: OTP-11951</p> + </item> + </list> + </section> + +</section> + <section><title>STDLIB 2.0</title> <section><title>Fixed Bugs and Malfunctions</title> @@ -165,8 +1013,7 @@ also implemented by the generic behaviours <c>gen_server</c>, <c>gen_event</c> and <c>gen_fsm</c>.</p> <p> - The potential incompatibility refers to</p> - <p> + The potential incompatibility refers to:</p> <list> <item>The previous behaviour of intercepting the system message and passing a tuple of size 2 as the last argument to <c>sys:handle_system_msg/6</c> is no longer @@ -174,7 +1021,7 @@ <c>StateFun</c> in <c>sys:replace_state/2,3</c> fails is changed from being totally silent to possibly (if the callback module does not catch) throw an exception in the - client process.</item> </list></p> + client process.</item> </list> <p> (Thanks to James Fish and Steve Vinoski)</p> <p> @@ -336,22 +1183,28 @@ <p> EEP43: New data type - Maps</p> <p> - With Maps you may for instance: <taglist> <item><c>M0 = - #{ a => 1, b => 2}, % create - associations</c></item> <item><c>M1 = M0#{ a := 10 }, % - update values</c></item> <item><c>M2 = M1#{ "hi" => - "hello"}, % add new associations</c></item> <item><c>#{ - "hi" := V1, a := V2, b := V3} = M2. % match keys with - values</c></item> </taglist></p> - <p> - For information on how to use Maps please see the - <seealso marker="doc/reference_manual:maps">Reference - Manual</seealso>.</p> + With Maps you may for instance:</p> + <taglist> + <tag/> <item><c>M0 = #{ a => 1, b => 2}, % create + associations</c></item> + <tag/><item><c>M1 = M0#{ a := 10 }, % update values</c></item> + <tag/><item><c>M2 = M1#{ "hi" => + "hello"}, % add new associations</c></item> + <tag/><item><c>#{ "hi" := V1, a := V2, b := V3} = M2. + % match keys with values</c></item> + </taglist> + <p> + For information on how to use Maps please see Map Expressions in the + <seealso marker="doc/reference_manual:expressions#map_expressions"> + Reference Manual</seealso>.</p> <p> The current implementation is without the following - features: <taglist> <item>No variable keys</item> - <item>No single value access</item> <item>No map - comprehensions</item> </taglist></p> + features:</p> + <taglist> + <tag/><item>No variable keys</item> + <tag/><item>No single value access</item> + <tag/><item>No map comprehensions</item> + </taglist> <p> Note that Maps is <em>experimental</em> during OTP 17.0.</p> <p> @@ -1102,13 +1955,15 @@ supervisor or for the problematic child.</p> <p> This introduces some incompatibilities in stdlib due to - new return values from supervisor: <list> + new return values from supervisor:</p> + <list> <item>restart_child/2 can now return {error,restarting}</item> <item>delete_child/2 can now return {error,restarting}</item> <item>which_children/1 returns a list of {Id,Child,Type,Mods}, where Child, in addition to the old pid() or 'undefined', now also can be - 'restarting'.</item> </list></p> + 'restarting'.</item> + </list> <p> *** POTENTIAL INCOMPATIBILITY ***</p> <p> @@ -1124,10 +1979,10 @@ Own Id: OTP-9782 Aux Id: seq11964 </p> </item> <item> - <p> Use universal time as base in error logger + <p> Use universal time as base in error logger</p> <p> Previous conversion used the deprecated - calendar:local_time_to_universal_time/1 </p></p> + calendar:local_time_to_universal_time/1 </p> <p> Own Id: OTP-9854</p> </item> @@ -1884,10 +2739,10 @@ Own Id: OTP-8989 Aux Id: seq11741 </p> </item> <item> - <p>Fix exception generation in the io module + <p>Fix exception generation in the io module</p> <p> Some functions did not generate correct badarg exception - on a badarg exception.</p></p> + on a badarg exception.</p> <p> Own Id: OTP-9045</p> </item> @@ -2193,7 +3048,7 @@ platforms than before. If <c>configure</c> warns about no atomic implementation available, try using the <c>libatomic_ops</c> library. Use the <seealso - marker="doc/installation_guide:INSTALL#How-to-Build-and-Install-ErlangOTP_A-Closer-Look-at-the-individual-Steps_Configuring">--with-libatomic_ops=PATH</seealso> + marker="doc/installation_guide:INSTALL#Advanced-configuration-and-build-of-ErlangOTP">--with-libatomic_ops=PATH</seealso> <c>configure</c> command line argument when specifying where the <c>libatomic_ops</c> installation is located. The <c>libatomic_ops</c> library can be downloaded from: @@ -2211,7 +3066,7 @@ the pentium 4 processor. If you want the runtime system to be compatible with older processors (back to 486) you need to pass the <seealso - marker="doc/installation_guide:INSTALL#How-to-Build-and-Install-ErlangOTP_A-Closer-Look-at-the-individual-Steps_Configuring">--enable-ethread-pre-pentium4-compatibility</seealso> + marker="doc/installation_guide:INSTALL#Advanced-configuration-and-build-of-ErlangOTP">--enable-ethread-pre-pentium4-compatibility</seealso> <c>configure</c> command line argument when configuring the system.</p> <p> |