diff options
Diffstat (limited to 'web/news/e019_version_0_13_0.rst')
| -rw-r--r-- | web/news/e019_version_0_13_0.rst | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/web/news/e019_version_0_13_0.rst b/web/news/e019_version_0_13_0.rst deleted file mode 100644 index 2c8e66fa3..000000000 --- a/web/news/e019_version_0_13_0.rst +++ /dev/null @@ -1,182 +0,0 @@ -Version 0.13.0 released -======================= - -.. container:: metadata - - Posted by Dominik Picheta on 18/01/2016 - -Once again we are proud to announce the latest release of the Nim compiler -and related tools. This release comes just 3 months after the last -release! - -A new version of Nimble which depends on this release, has also been -released. See `this <http://forum.nim-lang.org/t/1912>`_ forum thread for -more information about the Nimble release. - -This release of Nim includes over 116 bug fixes, many of which are related -to closures. The lambda lifting algorithm in the compiler has been completely -rewritten, and some changes have been made to the semantics of closures in -Nim as a result. These changes may affect backwards compatibility and are all -described in the section below. - -With this release, we are one step closer to Nim version 1.0. -The 1.0 release will be a big milestone for Nim, because after that version -is released there will be no more breaking changes made to the language -or the standard library. - -That being said, the next release will likely be Nim 0.14. It will focus on -improvements to the GC and concurrency. We will in particular be looking at -ways to add multi-core support to async await. Standard library improvements -are also on our roadmap but may not make it for Nim 0.14. - -As always you can download the latest version of Nim from the -`download <download.html>`_ page. - -Happy coding! - -Changes affecting backwards compatibility ------------------------------------------ - -- ``macros.newLit`` for ``bool`` now produces false/true symbols which - actually work with the bool datatype. -- When compiling to JS: ``Node``, ``NodeType`` and ``Document`` are no longer - defined. Use the types defined in ``dom.nim`` instead. -- The check ``x is iterator`` (used for instance in concepts) was always a - weird special case (you could not use ``x is proc``) and was removed from - the language. -- Top level routines cannot have the calling convention ``closure`` - anymore. -- The ``redis`` module has been moved out of the standard library. It can - now be installed via Nimble and is located here: - https://github.com/nim-lang/redis -- ``math.RunningStat`` and its associated procs have been moved from - the ``math`` module to a new ``stats`` module. - - -Syntax changes -~~~~~~~~~~~~~~ - -The parser now considers leading whitespace in front of operators -to determine if an operator is used in prefix or infix position. -This means that finally ``echo $foo`` is parsed as people expect, -which is as ``echo($foo)``. It used to be parsed as ``(echo) $ (foo)``. - -``echo $ foo`` continues to be parsed as ``(echo) $ (foo)``. - -This also means that ``-1`` is always parsed as prefix operator so -code like ``0..kArraySize div 2 -1`` needs to be changed to -``0..kArraySize div 2 - 1``. - -This release also adds multi-line comments to Nim. The syntax for them is: -``#[ comment here ]#``. For more details read the section of -the `manual <docs/manual.html#lexical-analysis-multiline-comments>`_. - -Iterator changes -~~~~~~~~~~~~~~~~ - -Implicit return type inference for iterators has been removed from the language. The following used to work: - -.. code-block:: nim - iterator it = - yield 7 - -This was a strange special case and has been removed. Now you need to write it like so which is consistent with procs: - -.. code-block:: nim - iterator it: auto = - yield 7 - - -Closure changes -~~~~~~~~~~~~~~~ - -The semantics of closures changed: Capturing variables that are in loops do not produce a new environment. Nim closures behave like JavaScript closures now. - -The following used to work as the environment creation used to be attached to the loop body: - -.. code-block:: nim - - proc outer = - var s: seq[proc(): int {.closure.}] = @[] - for i in 0 ..< 30: - let ii = i - s.add(proc(): int = return ii*ii) - -This behaviour has changed in 0.13.0 and now needs to be written as: - -.. code-block:: nim - - proc outer = - var s: seq[proc(): int {.closure.}] = @[] - for i in 0 ..< 30: - (proc () = - let ii = i - s.add(proc(): int = return ii*ii))() - -The reason is that environment creations are now only performed once -per proc call. This change is subtle and unfortunate, but: - -1. Affects almost no code out there. -2. Is easier to implement and we are at a point in Nim's development process where simple+stable wins over perfect-in-theory+unstable-in-practice. -3. Implies programmers are more in control of where memory is allocated which is beneficial for a systems programming language. - -Bugfixes --------- - -The list below has been generated based on the commits in Nim's git -repository. As such it lists only the issues which have been closed -via a commit, for a full list see -`this link on Github <https://github.com/nim-lang/Nim/issues?utf8=%E2%9C%93&q=is%3Aissue+closed%3A%222015-10-27+..+2016-01-19%22+>`_. - -- Fixed "Generic arguments cannot be used in templates (raising undeclared identifier)" - (`#3498 <https://github.com/nim-lang/Nim/issues/3498>`_) -- Fixed "multimethods: Error: internal error: cgmeth.genConv" - (`#3550 <https://github.com/nim-lang/Nim/issues/3550>`_) -- Fixed "nimscript - SIGSEGV in except block" - (`#3546 <https://github.com/nim-lang/Nim/issues/3546>`_) -- Fixed "Bool literals in macros do not work." - (`#3541 <https://github.com/nim-lang/Nim/issues/3541>`_) -- Fixed "Docs: nativesocket.html - 404" - (`#3582 <https://github.com/nim-lang/Nim/issues/3582>`_) -- Fixed ""not nil" return types never trigger an error or warning" - (`#2285 <https://github.com/nim-lang/Nim/issues/2285>`_) -- Fixed "No warning or error is raised even if not nil is specified " - (`#3222 <https://github.com/nim-lang/Nim/issues/3222>`_) -- Fixed "Incorrect fsmonitor add() filter logic" - (`#3611 <https://github.com/nim-lang/Nim/issues/3611>`_) -- Fixed ""nimble install nimsuggest" failed" - (`#3622 <https://github.com/nim-lang/Nim/issues/3622>`_) -- Fixed "compile time `excl ` cause SIGSEGV" - (`#3639 <https://github.com/nim-lang/Nim/issues/3639>`_) -- Fixed "Unable to echo unsigned ints at compile-time" - (`#2514 <https://github.com/nim-lang/Nim/issues/2514>`_) -- Fixed "Nested closure iterator produces internal error" - (`#1725 <https://github.com/nim-lang/Nim/issues/1725>`_) -- Fixed "C Error on walkDirRec closure" - (`#3636 <https://github.com/nim-lang/Nim/issues/3636>`_) -- Fixed "Error in generated c code" - (`#3201 <https://github.com/nim-lang/Nim/issues/3201>`_) -- Fixed "C Compile-time error with generic proc type." - (`#2659 <https://github.com/nim-lang/Nim/issues/2659>`_) -- Fixed "ICE dereferencing array pointer" - (`#2240 <https://github.com/nim-lang/Nim/issues/2240>`_) -- Fixed "Lambda lifting crash" - (`#2007 <https://github.com/nim-lang/Nim/issues/2007>`_) -- Fixed "Can't reference outer variables from a closure in an iterator" - (`#2604 <https://github.com/nim-lang/Nim/issues/2604>`_) -- Fixed "M&S collector breaks with nested for loops." - (`#603 <https://github.com/nim-lang/Nim/issues/603>`_) -- Fixed "Regression: bad C codegen" - (`#3723 <https://github.com/nim-lang/Nim/issues/3723>`_) -- Fixed "JS backend - handle bool type in case statement" - (`#3722 <https://github.com/nim-lang/Nim/issues/3722>`_) -- Fixed "linenoise compilation with cpp" - (`#3720 <https://github.com/nim-lang/Nim/issues/3720>`_) -- Fixed "(???,???) duplicate case label" - (`#3665 <https://github.com/nim-lang/Nim/issues/3665>`_) -- Fixed "linenoise compilation with cpp" - (`#3720 <https://github.com/nim-lang/Nim/issues/3720>`_) -- Fixed "Update list of backward incompatibilities for Nim 0.12.0 in the main site" - (`#3689 <https://github.com/nim-lang/Nim/issues/3689>`_) -- Fixed "Can't compile nimble with latest devel - codegen bug" - (`#3730 <https://github.com/nim-lang/Nim/issues/3730>`_) |