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diff --git a/lib/stdlib/doc/src/notes.xml b/lib/stdlib/doc/src/notes.xml index e26c4aba74..09290585ad 100644 --- a/lib/stdlib/doc/src/notes.xml +++ b/lib/stdlib/doc/src/notes.xml @@ -31,6 +31,337 @@ </header> <p>This document describes the changes made to the STDLIB application.</p> +<section><title>STDLIB 3.5</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> When using an exception that is valid but not allowed + in a state enter call, the reason has been changed from + <c>{bad_action_from_state_function,Action}</c> to + <c>{bad_state_enter_action_from_state_function,Action}</c>. + </p><p> Timer parsing has been improved. Many erroneous + timeout tuples was not handled correctly. </p><p> The + documentation has been updated, in particular the User's + Guide and the pointer to it from the Reference Manual is + much more obvious. </p> + <p> + Own Id: OTP-14015</p> + </item> + <item> + <p> + The type specifications for <c>file:posix/0</c> and + <c>inet:posix/0</c> have been updated according to which + errors file and socket operations should be able to + return.</p> + <p> + Own Id: OTP-14019 Aux Id: ERL-550 </p> + </item> + <item> + <p> File operations used to accept <seealso + marker="kernel:file#type-name_all">filenames</seealso> + containing null characters (integer value zero). This + caused the name to be truncated and in some cases + arguments to primitive operations to be mixed up. + Filenames containing null characters inside the filename + are now <em>rejected</em> and will cause primitive file + operations to fail. </p> <p> Also environment variable + operations used to accept <seealso + marker="kernel:os#type-env_var_name">names</seealso> and + <seealso + marker="kernel:os#type-env_var_value">values</seealso> of + environment variables containing null characters (integer + value zero). This caused operations to silently produce + erroneous results. Environment variable names and values + containing null characters inside the name or value are + now <em>rejected</em> and will cause environment variable + operations to fail. </p> <p>Primitive environment + variable operations also used to accept the <c>$=</c> + character in environment variable names causing various + problems. <c>$=</c> characters in environment variable + names are now also <em>rejected</em>. </p> <p>Also + <seealso + marker="kernel:os#cmd/1"><c>os:cmd/1</c></seealso> now + reject null characters inside its <seealso + marker="kernel:os#type-os_command">command</seealso>. + </p> <p><seealso + marker="erts:erlang#open_port/2"><c>erlang:open_port/2</c></seealso> + will also reject null characters inside the port name + from now on.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-14543 Aux Id: ERL-370 </p> + </item> + <item> + <p> Make <c>io_lib:unscan_format/1</c> work with pad char + and default precision. </p> + <p> + Own Id: OTP-14958 Aux Id: PR-1735 </p> + </item> + <item> + <p> The control sequence modifiers <c>t</c> and <c>l</c> + can be used together in the same control sequence which + makes it possible to have Unicode atoms and no detection + of printable character lists at the same time. </p> + <p> + Own Id: OTP-14971 Aux Id: PR-1743 </p> + </item> + <item> + <p> Fix a bug in the Erlang code linter: the check of + guard expressions no longer returns <c>false</c> if the + map syntax is used. The bug affected the Erlang shell, + the Debugger, and other modules evaluating abstract code. + </p> + <p> + Own Id: OTP-15035 Aux Id: ERL-613 </p> + </item> + <item> + <p> + A sys debug fun of type {Fun,State} should not be + possible to install twice. This was, however, possible if + the current State was 'undefined', which was mistaken for + non-existing fun. This has been corrected.</p> + <p> + Own Id: OTP-15049</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + The <c>gen_server</c> has gotten a new callback + <c>handle_continue/2</c> for check pointing the state. + This is useful at least when implementing behaviours on + top of <c>gen_server</c> and for some start up scenarios.</p> + <p> + Own Id: OTP-13019 Aux Id: PR-1490 </p> + </item> + <item> + <p> The semantics of timeout parameter + <c>{clean_timeout,infinity}</c> to + <c>gen_statem:call/3</c> has been changed to use a proxy + process for the call. With this change + <c>clean_timeout</c> implicates a proxy process with no + exceptions. This may be a hard to observe + incompatibility: in the presence of network problems a + late reply could arrive in the caller's message queue + when catching errors. That will not happen after this + correction. </p><p> The semantics of timeout parameter + <c>infinity</c> has not been changed. </p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-13073 Aux Id: PR-1595 </p> + </item> + <item> + <p> + A new logging API is added to OTP. This is implemented in + the Kernel application, module logger.</p> + <p> + Legacy calls to error_logger will be automatically + redirected to the new API.</p> + <p> + See the reference manual for module logger, and the + User's Guide for the Kernel application for more + information.</p> + <p> + Own Id: OTP-13295</p> + </item> + <item> + <p> Add functions + <c>calendar:system_time_to_local_time/2</c> and + <c>calendar:system_time_to_universal_time/2</c>. </p> + <p> + Own Id: OTP-13413</p> + </item> + <item> + <p> Functions <c>rand:uniform_real/0</c> and + <c>rand:uniform_real_s/1</c> have been added. They + produce uniformly distributed numbers in the range <c>0.0 + =< X < 1.0</c> that are as close to random real + numbers as Normalized IEEE 754 Double Precision allows. + Because the random real number exactly <c>0.0</c> is + infinitely improbable they will never return exactly + <c>0.0</c>. </p><p> These properties are useful when you + need to call for example <c>math:log(X)</c> or <c>1 / + X</c> on a random value <c>X</c>, since that will never + fail with a number from these new functions. </p> + <p> + Own Id: OTP-13764 Aux Id: PR-1574 </p> + </item> + <item> + <p> + Added maps:iterator/0 and maps:next/1 to be used for + iterating over the key-value associations in a map.</p> + <p> + Own Id: OTP-14012</p> + </item> + <item> + <p>Changed the default behaviour of <c>.erlang</c> + loading: <c>.erlang</c> is no longer loaded from the + current directory. <c>c:erlangrc(PathList)</c> can be + used to search and load an <c>.erlang</c> file from user + specified directories.</p> <p><c>escript</c>, + <c>erlc</c>, <c>dialyzer</c> and <c>typer</c> no longer + load an <c>.erlang</c> at all.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-14439</p> + </item> + <item> + <p> + Added new uri_string module to stdlib for handling URIs + (RFC 3986).</p> + <p> + Own Id: OTP-14496</p> + </item> + <item> + <p> + Update Unicode specification to version 10.0.</p> + <p> + Own Id: OTP-14503</p> + </item> + <item> + <p><c>filelib:wildcard()</c> now allows characters with a + special meaning to be escaped using backslashes.</p> + <p>This is an incompatible change, but note that the use + of backslashes in wildcards would already work + differently on Windows and Unix. Existing calls to + <c>filelib:wildcard()</c> needs to be updated. On + Windows, directory separators must always be written as a + slash.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-14577</p> + </item> + <item> + <p> + The supervisor now stores its child specifications in a + map instead of a list. This causes a significant + improvement when starting many children under a + non-simple_one_for_one supervisor.</p> + <p> + Own Id: OTP-14586</p> + </item> + <item> + <p> The <c>base64</c> module is optimized. </p> <p> Note + that the functions <c>encode/1</c>, <c>decode/1</c>, and + <c>mime_decode/1</c> fail unless called with an argument + of the documented type. They used to accept any + <c>iodata()</c>. </p> + <p> + Own Id: OTP-14624 Aux Id: PR-1565 </p> + </item> + <item> + <p> Add function <c>lists:search/2</c>. </p> + <p> + Own Id: OTP-14675 Aux Id: PR-102 </p> + </item> + <item> + <p> + uri_string module extended with functions for handling + application/x-www-form-urlencoded query strings based on + the HTML5 specification.</p> + <p> + Own Id: OTP-14747</p> + </item> + <item> + <p> Add functions + <c>calendar:rfc3339_to_system_time/1,2</c> and + <c>calendar:system_time_to_rfc3339/1,2</c>. </p> + <p> + Own Id: OTP-14764</p> + </item> + <item> + <p> The stack traces returned by the functions of the + <c>erl_eval</c> module more accurately reflect where the + exception occurred. </p> + <p> + Own Id: OTP-14826 Aux Id: PR 1540 </p> + </item> + <item> + <p> Add options <c>atime</c>, <c>mtime</c>, <c>ctime</c>, + <c>uid</c>, and <c>gid</c> to the <c>erl_tar:add/3,4</c> + functions. </p> + <p> + Own Id: OTP-14834 Aux Id: PR 1608 </p> + </item> + <item> + <p>Added <c>ets:whereis/1</c> for retrieving the table + identifier of a named table.</p> + <p> + Own Id: OTP-14884</p> + </item> + <item> + <p> + Improved URI normalization functions in the uri_string + module.</p> + <p> + Own Id: OTP-14910</p> + </item> + <item> + <p> The new functions <c>io_lib:fwrite/3</c> and + <c>io_lib:format/3</c> take a third argument, an option + list. The only option is <c>chars_limit</c>, which is + used for limiting the number of returned characters. The + limit is soft, which means that the number of returned + characters exceeds the limit with at most a smallish + amount. If the limit is set, the functions + <c>format/3</c> and <c>fwrite/3</c> try to distribute the + number of characters evenly over the control sequences + <c>pPswW</c>. Furthermore, the control sequences + <c>pPwP</c> try to distribute the number of characters + evenly over substructures. </p> <p> A modification of the + control sequences <c>pPwW</c> is that even if there is no + limit on the number of returned characters, all + associations of a map are printed to the same depth. The + aim is to give a more consistent output as the order of + map keys is not defined. As before, if the depth is less + than the number of associations of a map, the selection + of associations to print is arbitrary. </p> + <p> + Own Id: OTP-14983</p> + </item> + <item> + <p> Add functions <c>ordsets:is_empty/1</c> and + <c>sets:is_empty/1</c>. </p> + <p> + Own Id: OTP-14996 Aux Id: ERL-557, PR-1703 </p> + </item> + <item> + <p>External funs with literal values for module, name, + and arity (e.g. <c>erlang:abs/1</c>) are now treated as + literals. That means more efficient code that produces + less garbage on the heap.</p> + <p> + Own Id: OTP-15003</p> + </item> + <item> + <p> + sys:statistics(Pid,get) did not report 'out' messages + from gen_server. This is now corrected.</p> + <p> + Own Id: OTP-15047</p> + </item> + <item> + <p> + A sys debug function can now have the format + {Id,Fun,State} in addition to the old {Fun,State}. This + allows installing multiple instances of a debug fun.</p> + <p> + Own Id: OTP-15048</p> + </item> + </list> + </section> + +</section> + <section><title>STDLIB 3.4.5</title> <section><title>Fixed Bugs and Malfunctions</title> |