case consistency part 7 - Nim - This repository contains the Nim compiler, Nim's stdlib, tools, and documentation. (mirror)

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author	Araq <rumpf_a@web.de>	2013-12-28 01:36:35 +0100
committer	Araq <rumpf_a@web.de>	2013-12-28 01:36:35 +0100
commit	7e0da3e8f7687ba9eb2c24beca7b7a833621d1bc (patch)
tree	a3f4707519f16a3eae78e20618e8505a64fd5f10 /lib/pure/collections/sets.nim
parent	bf205fa85d5b3b1caa5f7def0e2d73999ddfb6a9 (diff)
download	Nim-7e0da3e8f7687ba9eb2c24beca7b7a833621d1bc.tar.gz

case consistency part 7

Diffstat (limited to 'lib/pure/collections/sets.nim')

-rw-r--r--

lib/pure/collections/sets.nim

1 files changed, 19 insertions, 21 deletions

## v0.19.X - XX/XX/2018 ### Changes affecting backwards compatibility - The stdlib module ``future`` has been renamed to ``sugar``. - ``macros.callsite`` is now deprecated. Since the introduction of ``varargs`` parameters this became unnecessary. - Anonymous tuples with a single element can now be written as ``(1,)`` with a trailing comma. The underlying AST is ``nnkTupleConstr(newLit 1)`` for this example. ``nnkTupleConstr`` is a new node kind your macros need to be able to deal with! - Indexing into a ``cstring`` for the JS target is now mapped to ``charCodeAt``. - Assignments that would "slice" an object into its supertype are now prevented at runtime. Use ``ref object`` with inheritance rather than ``object`` with inheritance to prevent this issue. - The ``not nil`` type annotation now has to be enabled explicitly via ``{.experimental: "notnil".}`` as we are still not pleased with how this feature works with Nim's containers. - The parser now warns about inconsistent spacing around binary operators as these can easily be confused with unary operators. This warning will likely become an error in the future. - The ``'c`` and ``'C'`` suffix for octal literals is now deprecated to bring the language in line with the standard library (e.g. ``parseOct``). - The dot style for import paths (e.g ``import path.to.module`` instead of ``import path/to/module``) has been deprecated. #### Breaking changes in the standard library - ``re.split`` for empty regular expressions now yields every character in the string which is what other programming languages chose to do. - The returned tuple of ``system.instantiationInfo`` now has a third field containing the column of the instantiation. - ``cookies.setCookie`` no longer assumes UTC for the expiration date. - ``strutils.formatEng`` does not distinguish between ``nil`` and ``""`` strings anymore for its ``unit`` parameter. Instead the space is controlled by a new parameter ``useUnitSpace``. - The ``times.parse`` and ``times.format`` procs have been rewritten. The proc signatures are the same so it should generally not break anything. However, the new implementation is a bit stricter, which is a breaking change. For example ``parse("2017-01-01 foo", "yyyy-MM-dd")`` will now raise an error. - ``proc `-`*(a, b: Time): int64`` in the ``times`` module has changed return type to ``times.Duration`` in order to support higher time resolutions. The proc is no longer deprecated. - The ``times.Timezone`` is now an immutable ref-type that must be initialized with an explicit constructor (``newTimezone``). - ``posix.Timeval.tv_sec`` has changed type to ``posix.Time``. - ``math.`mod` `` for floats now behaves the same as ``mod`` for integers (previously it used floor division like Python). Use ``math.floorMod`` for the old behavior. - For string inputs, ``unicode.isUpper`` and ``unicode.isLower`` now require a second mandatory parameter ``skipNonAlpha``. - For string inputs, ``strutils.isUpperAscii`` and ``strutils.isLowerAscii`` now require a second mandatory parameter ``skipNonAlpha``. - ``osLastError`` is now marked with ``sideEffect`` - The procs ``parseHexInt`` and ``parseOctInt`` now fail on empty strings and strings containing only valid prefixes, e.g. "0x" for hex integers. - ``terminal.setCursorPos`` and ``terminal.setCursorXPos`` now work correctly with 0-based coordinates on POSIX (previously, you needed to use 1-based coordinates on POSIX for correct behaviour; the Windows behaviour was always correct). - ``lineInfoObj`` now returns absolute path instead of project path. It's used by ``lineInfo``, ``check``, ``expect``, ``require``, etc. - ``net.sendTo`` no longer returns an int and now raises an ``OSError``. - `threadpool`'s `await` and derivatives have been renamed to `blockUntil` to avoid confusions with `await` from the `async` macro. #### Breaking changes in the compiler - The undocumented ``#? braces`` parsing mode was removed. - The undocumented PHP backend was removed. - The default location of ``nimcache`` for the native code targets was changed. Read [the compiler user guide](https://nim-lang.org/docs/nimc.html#generated-c-code-directory) for more information. ### Library additions - ``re.split`` now also supports the ``maxsplit`` parameter for consistency with ``strutils.split``. - Added ``system.toOpenArray`` in order to support zero-copy slicing operations. This is currently not yet available for the JavaScript target. - Added ``getCurrentDir``, ``findExe``, ``cpDir`` and ``mvDir`` procs to ``nimscript``. - The ``times`` module now supports up to nanosecond time resolution when available. - Added the type ``times.Duration`` for representing fixed durations of time. - Added the proc ``times.convert`` for converting between different time units, e.g days to seconds. - Added the proc ``algorithm.binarySearch[T, K]`` with the ```cmp``` parameter. - Added the proc ``algorithm.upperBound``. - Added inverse hyperbolic functions, ``math.arcsinh``, ``math.arccosh`` and ``math.arctanh`` procs. - Added cotangent, secant and cosecant procs ``math.cot``, ``math.sec`` and ``math.csc``; and their hyperbolic, inverse and inverse hyperbolic functions, ``math.coth``, ``math.sech``, ``math.csch``, ``math.arccot``, ``math.arcsec``, ``math.arccsc``, ``math.arccoth``, ``math.arcsech`` and ``math.arccsch`` procs. - Added the procs ``math.floorMod`` and ``math.floorDiv`` for floor based integer division. - Added the procs ``rationals.`div```, ``rationals.`mod```, ``rationals.floorDiv`` and ``rationals.floorMod`` for rationals. - Added the proc ``math.prod`` for product of elements in openArray. - Added the proc ``parseBinInt`` to parse a binary integer from a string, which returns the value. - ``parseOct`` and ``parseBin`` in parseutils now also support the ``maxLen`` argument similar to ``parseHexInt``. - Added the proc ``flush`` for memory mapped files. - Added the ``MemMapFileStream``. - Added a simple interpreting event parser template ``eventParser`` to the ``pegs`` module. - Added ``macros.copyLineInfo`` to copy lineInfo from other node. - Added ``system.ashr`` an arithmetic right shift for integers. ### Library changes - ``macros.astGenRepr``, ``macros.lispRepr`` and ``macros.treeRepr`` now escapes the content of string literals consistently. - ``macros.NimSym`` and ``macros.NimIdent`` is now deprecated in favor of the more general ``NimNode``. - ``macros.getImpl`` now includes the pragmas of types, instead of omitting them. - ``macros.hasCustomPragma`` and ``macros.getCustomPragmaVal`` now also support ``ref`` and ``ptr`` types, pragmas on types and variant fields. - ``system.SomeReal`` is now called ``SomeFloat`` for consistency and correctness. - ``algorithm.smartBinarySearch`` and ``algorithm.binarySearch`` is now joined in ``binarySearch``. ``smartbinarySearch`` is now deprecated. - The `terminal` module now exports additional procs for generating ANSI color codes as strings. - Added the parameter ``val`` for the ``CritBitTree[int].inc`` proc. - An exception raised from a ``test`` block of ``unittest`` now shows its type in error message. - The ``compiler/nimeval`` API was rewritten to simplify the "compiler as an API". Using the Nim compiler and its VM as a scripting engine has never been easier. See ``tests/compilerapi/tcompilerapi.nim`` for an example of how to use the Nim VM in a native Nim application. - Added the parameter ``val`` for the ``CritBitTree[T].incl`` proc. - The proc ``tgamma`` was renamed to ``gamma``. ``tgamma`` is deprecated. - The ``pegs`` module now exports getters for the fields of its ``Peg`` and ``NonTerminal`` object types. ``Peg``s with child nodes now have the standard ``items`` and ``pairs`` iterators. - The ``accept`` socket procedure defined in the ``net`` module can now accept a nil socket. ### Language additions - Dot calls combined with explicit generic instantiations can now be written as ``x.y[:z]`` which is transformed into ``y[z](x)`` by the parser. - ``func`` is now an alias for ``proc {.noSideEffect.}``. - In order to make ``for`` loops and iterators more flexible to use Nim now supports so called "for-loop macros". See the [manual](manual.html#macros-for-loop-macros) for more details. This feature enables a Python-like generic ``enumerate`` implementation. - Case statements can now be rewritten via macros. See the [manual](manual.html#macros-case-statement-macros) for more information. This feature enables custom pattern matchers. - the `typedesc` special type has been renamed to just `type`. - `static` and `type` are now also modifiers similar to `ref` and `ptr`. They denote the special types `static[T]` and `type[T]`. - Forcing compile-time evaluation with `static` now supports specifying the desired target type (as a concrete type or as a type class) - The `type` operator now supports checking that the supplied expression matches an expected type constraint. ### Language changes - The `importcpp` pragma now allows importing the listed fields of generic C++ types. Support for numeric parameters have also been added through the use of `static[T]` types. (#6415) - Native C++ exceptions can now be imported with `importcpp` pragma. Imported exceptions can be raised and caught just like Nim exceptions. More details in language manual. - ``nil`` for strings/seqs is finally gone. Instead the default value for these is ``"" / @[]``. Use ``--nilseqs:on`` for a transition period. - Accessing the binary zero terminator in Nim's native strings is now invalid. Internally a Nim string still has the trailing zero for zero-copy interoperability with ``cstring``. Compile your code with the new switch ``--laxStrings:on`` if you need a transition period. - The command syntax now supports keyword arguments after the first comma. - Thread-local variables can now be declared inside procs. This implies all the effects of the ``global`` pragma. - Nim now supports the ``except`` clause in the export statement. - Range float types, example ``range[0.0 .. Inf]``. More details in language manual. - The ``{.this.}`` pragma has been deprecated. It never worked within generics and we found the resulting code harder to read than the more explicit ``obj.field`` syntax. - "Memory regions" for pointer types have been deprecated, they were hardly used anywhere. Note that this has **nothing** to do with the ``--gc:regions`` switch of managing memory. - The exception hierarchy was slightly reworked, ``SystemError`` was renamed to ``CatchableError`` and is the new base class for any exception that is guaranteed to be catchable. This change should have minimal impact on most existing Nim code. ### Tool changes - ``jsondoc2`` has been renamed ``jsondoc``, similar to how ``doc2`` was renamed ``doc``. The old ``jsondoc`` can still be invoked with ``jsondoc0``. ### Compiler changes - The VM's instruction count limit was raised to 3 million instructions in order to support more complex computations at compile-time. - Support for hot code reloading has been implemented for the JavaScript target. To use it, compile your code with `--hotCodeReloading:on` and use a helper library such as LiveReload or BrowserSync. - A new compiler option `--cppCompileToNamespace` puts the generated C++ code into the namespace "Nim" in order to avoid naming conflicts with existing C++ code. This is done for all Nim code - internal and exported. - Added ``macros.getProjectPath`` and ``os.putEnv`` procs to Nim's virtual machine. - The ``deadCodeElim`` option is now always turned on and the switch has no effect anymore, but is recognized for backwards compatibility. - ``experimental`` is now a pragma / command line switch that can enable specific language extensions, it is not an all-or-nothing switch anymore. - Nintendo Switch was added as a new platform target. See [the compiler user guide](https://nim-lang.org/docs/nimc.html) for more info. - macros.bindSym now capable to accepts not only literal string or string constant expression. bindSym enhancement make it also can accepts computed string or ident node inside macros / compile time functions / static blocks. Only in templates / regular code it retains it's old behavior. This new feature can be accessed via {.experimental: "dynamicBindSym".} pragma/switch. - On Posix systems the global system wide configuration is now put under ``/etc/nim/nim.cfg``, it used to be ``/etc/nim.cfg``. Usually it does not exist, however. - On Posix systems the user configuration is now looked under ``$XDG_CONFIG_HOME/nim/nim.cfg`` (if ``XDG_CONFIG_HOME`` is not defined, then under ``~/.config/nim/nim.cfg``). It used to be ``$XDG_CONFIG_DIR/nim.cfg`` (and ``~/.config/nim.cfg``). Similarly, on Windows, the user configuration is now looked under ``%APPDATA%/nim/nim.cfg``. This used to be ``%APPDATA%/nim.cfg``. ### Bugfixes


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