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digitalmars.D.bugs - [Issue 5237] New: writefln doesn't respect Complex.toString

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=5237

           Summary: writefln doesn't respect Complex.toString
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody puremagic.com
        ReportedBy: clugdbug yahoo.com.au



import std.complex;
import std.stdio;

void main()
{
     cdouble z2 = 10 + 1.5e-6i;
     Complex!(double) z;
     z.re = 10;
     z.im = 1.5e-6;
     writefln("z= %.16f z2 = %.16f", z, z2);
    writefln("z = %f z2 = %f", z, z2);
    writefln("z = %e z2 = %e", z, z2);
    writefln("z = %a z2 = %a", z, z2);
} 

z = 10+1.5e-06i z2 = 10.0000000000000000+0.0000015000000000i 
z = 10+1.5e-06i z2 = 10.000000+0.000001i
z = 10+1.5e-06i z2 = 1.000000e+01+1.500000e-06i
z = 10+1.5e-06i z2 = 0x1.4p+3+0x1.92a737110e454p-20i 

Clearly the format string is not being passed, or is being ignored.

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Nov 18 2010
next sibling parent d-bugmail puremagic.com writes:
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Partial fix in svn 2183. This fixes the last 3 cases, not the first one.
It would be very straightforward to implement the first case, but we need to
think if it would really be a sensible design, since we'd be doing
atoi(itoa(atoi(original_string))).

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Nov 19 2010
prev sibling next sibling parent d-bugmail puremagic.com writes:
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Don <clugdbug yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jmdavisProg gmx.com



*** Issue 5231 has been marked as a duplicate of this issue. ***

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Nov 19 2010
prev sibling next sibling parent d-bugmail puremagic.com writes:
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Lars T. Kyllingstad <bugzilla kyllingen.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzilla kyllingen.net



02:26:47 PST ---


 Partial fix in svn 2183. This fixes the last 3 cases, not the first one.
 It would be very straightforward to implement the first case, but we need to
 think if it would really be a sensible design, since we'd be doing
 atoi(itoa(atoi(original_string))).


Couln't that be easily solved by storing the full format string in FormatSpec?

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prev sibling next sibling parent d-bugmail puremagic.com writes:
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 Partial fix in svn 2183. This fixes the last 3 cases, not the first one.
 It would be very straightforward to implement the first case, but we need to
 think if it would really be a sensible design, since we'd be doing
 atoi(itoa(atoi(original_string))).


 
 Couln't that be easily solved by storing the full format string in FormatSpec?


Probably. My guess is that positional parameters will make it more complicated,
but possibly it's really simple.

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prev sibling next sibling parent d-bugmail puremagic.com writes:
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04:32:21 PST ---


 My guess is that positional parameters will make it more complicated,
 but possibly it's really simple.


Regarding positional parameters, allow me to restate a point I made in the DIP9
thread on the newsgroup:

I think it's best to leave out the '%' from the format string that is sent to
toString().  This will facilitate the use of positional parameters, in which
the percent is followed by a position specifier which necessarily has to be
handled at a higher level than toString().  Example:

  BigInt i = "456";
  BigInt j = "123";
  writefln("%2$s %1$s", i, j);  // Prints "123 456"

The only thing BigInt.writeTo() needs to see is the part after the '$'
character.

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04:35:04 PST ---




 Partial fix in svn 2183. This fixes the last 3 cases, not the first one.
 It would be very straightforward to implement the first case, but we need to
 think if it would really be a sensible design, since we'd be doing
 atoi(itoa(atoi(original_string))).


 
 Couln't that be easily solved by storing the full format string in FormatSpec?


One problem is of course when the user passes a non-immutable format string, as
in

  char[] fmt = "%s %s".dup;
  writefln(fmt, 1, 3.14);

Then each format specifier has to be dup-ed before being stored in FormatSpec.

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Nov 19 2010
prev sibling next sibling parent d-bugmail puremagic.com writes:
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Andrei Alexandrescu <andrei metalanguage.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |andrei metalanguage.com
         AssignedTo|nobody puremagic.com        |andrei metalanguage.com


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Jan 09 2011
prev sibling next sibling parent d-bugmail puremagic.com writes:
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Kenji Hara <k.hara.pg gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch



https://github.com/D-Programming-Language/phobos/pull/126

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Sep 02 2011
prev sibling parent d-bugmail puremagic.com writes:
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Kenji Hara <k.hara.pg gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED



https://github.com/D-Programming-Language/phobos/commit/4c8cbd2f29637abfadb2d3057a5e747fe8084d4d

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Sep 10 2011