• d-bugmail puremagic.com (20/20) Aug 10 2012 http://d.puremagic.com/issues/show_bug.cgi?id=8531
• d-bugmail puremagic.com (15/15) Oct 27 2012 http://d.puremagic.com/issues/show_bug.cgi?id=8531
• d-bugmail puremagic.com (14/22) Oct 27 2012 http://d.puremagic.com/issues/show_bug.cgi?id=8531

d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=8531

           Summary: formatting string documentation
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody puremagic.com
        ReportedBy: bioinfornatics gmail.com



03:39:04 PDT ---
Dear,

In this documentation http://dlang.org/phobos/std_format.html#format-string
They do not talk about %u for unsigned number. %u works well with both readf
and writef

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d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=8531


hsteoh quickfur.ath.cx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hsteoh quickfur.ath.cx



Actually, I think %u is redundant. std.format uses compile-time introspection
to do the "right thing" for %d. You can pass an unsigned number for %d and it
works correctly. I just tested %u, it seems that it's just an alias for %d:

int a = -10;
writefln("%u", a); // outputs "-10"

So I think this bug is invalid.

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d-bugmail puremagic.com writes:

http://d.puremagic.com/issues/show_bug.cgi?id=8531


Kenji Hara <k.hara.pg gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID




 Actually, I think %u is redundant. std.format uses compile-time introspection
 to do the "right thing" for %d. You can pass an unsigned number for %d and it
 works correctly. I just tested %u, it seems that it's just an alias for %d:
 
 int a = -10;
 writefln("%u", a); // outputs "-10"
 
 So I think this bug is invalid.

Yes. And, if programmer really want to format int value as unsigned, he needs
to use cast instead of %u.

writefln("%d", cast(uint)a); // outputs "4294967286"

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