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digitalmars.D.bugs - [Issue 6614] New: std.traits should have an isFinal template

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=6614

           Summary: std.traits should have an isFinal template
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Phobos
        AssignedTo: nobody puremagic.com
        ReportedBy: timon.gehr gmx.ch



std.traits should have an isFinal template which indicates if a class type or
member function is final.

class A{}
final class B{}

static assert(!isFinal!A && isFinal!B);


class C{int foo();}
class D{final int foo();}

static assert(!isFinal!(C.foo) && isFinal!(D.foo));

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Sep 06 2011
next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=6614


Andrej Mitrovic <andrej.mitrovich gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |andrej.mitrovich gmail.com



09:56:01 PST ---
We do have a trait for this:

class A{}
final class B{}

void main()
{
    static assert(!__traits(isFinalClass, A));
    static assert(__traits(isFinalClass, B));
}

Not too sure if it's worth having it as a template in std.traits?

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Dec 02 2012
prev sibling next sibling parent d-bugmail puremagic.com writes:
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09:57:00 PST ---
For functions there's:

__traits(isFinalFunction, ...)

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Dec 02 2012
prev sibling next sibling parent d-bugmail puremagic.com writes:
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12:59:59 PST ---
So is the idea of the enhancement just to merge the two traits under a single
name via Phobos templates?

E.g. (using overloads):

import std.traits;

template isFinal(T) if (is(T == class))
{
    enum bool isFinal = __traits(isFinalClass, T);
}

template isFinal(alias T) if (isSomeFunction!T)
{
    enum bool isFinal = __traits(isFinalFunction, T);
}

class C
{
    void nf() { }
    static void sf() { }
    final void ff() { }
}

final class FC { }

static assert(!isFinal!(C.nf));
static assert(!isFinal!(C.sf));
static assert(isFinal!(C.ff));
static assert(!isFinal!(C));
static assert(isFinal!(FC));

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Dec 27 2012
prev sibling next sibling parent d-bugmail puremagic.com writes:
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Andrej Mitrovic <andrej.mitrovich gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         OS/Version|Linux                       |All



15:11:14 PST ---
Ping! :]

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Jan 22 2013
prev sibling next sibling parent d-bugmail puremagic.com writes:
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 Ping! :]


Yes, looks good.

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Jan 23 2013
prev sibling next sibling parent d-bugmail puremagic.com writes:
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Andrej Mitrovic <andrej.mitrovich gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pull
         AssignedTo|nobody puremagic.com        |andrej.mitrovich gmail.com



15:00:11 PST ---
https://github.com/D-Programming-Language/phobos/pull/1099

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Jan 25 2013
prev sibling next sibling parent d-bugmail puremagic.com writes:
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Commit pushed to master at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/40cca46b4289dab8a072fa6ed9188347b2579db4
Fixes Issue 6614 - Add isFinalFunction and isFinalClass.

Add isAbstractClass to mirror __traits().

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Jan 26 2013
prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=6614


Alex Rønne Petersen <alex lycus.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alex lycus.org
         Resolution|                            |FIXED


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