www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.bugs - [Issue 7282] New: std.string.format throws at runtime where writef works fine

reply d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=7282

           Summary: std.string.format throws at runtime where writef works
                    fine
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody puremagic.com
        ReportedBy: andrej.mitrovich gmail.com



12:11:01 PST ---
module test;

import std.array;
import std.conv;
import std.range;
import std.string;
import std.stdio;

auto pretty(string src)
{
    Appender!(dchar[]) res;

    size_t i;
    foreach (dchar ch; retro(src))
    {
        if (++i % 3 == 0)
            res.put("_");

        res.put(ch);
    }

    return retro(res.data);
}

void main()
{
    // ok, "123_456"
    writefln("%s", pretty("123456"));

    // FormatException
    // std.format.FormatException std\format.d(3956): 
    // Can't convert std.range.retro!(dchar[]).retro.Result to string: 
    // "string toString()" not defined    
    auto str1 = format("%s", pretty("123456"));  
}

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Jan 12 2012
next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=7282




12:12:49 PST ---
Btw a workaround:

    string str = to!string(pretty("123456"));
    auto str1 = format("%s", str);

So to!string works as well, it's just format() that bails.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Jan 12 2012
prev sibling next sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=7282




12:23:57 PST ---
Also that function is broken (I mean its result), fixed one is:

auto pretty(string src)
{
    Appender!(dchar[]) res;

    size_t i = 1;
    while (!src.empty)
    {
        res.put(src.back);
        src.popBack;

        if (!src.empty && (i++ % 3 == 0))
            res.put("_");
    }

    return retro(res.data);
}


I was hoping there was something like this in Phobos but it didn't catch my
eye. Anywho..

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Jan 12 2012
prev sibling parent d-bugmail puremagic.com writes:
http://d.puremagic.com/issues/show_bug.cgi?id=7282


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

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



17:51:28 PST ---
Works in 2.061.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
Jan 21 2013