[Issue 5970] New: format("%d", BigInt) problem

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5970

           Summary: format("%d", BigInt) problem
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: bearophile_hugs at eml.cc


--- Comment #0 from bearophile_hugs at eml.cc 2011-05-09 15:27:23 PDT ---
This is in reply to comment #3 of bug 5765

> > How do I perform the equivalent of str(ackermann(4, 2)) with BigInt?
> 
> format("%d", ackermann(4,2))

I think it doesn't work with DMD 2.053beta:


import std.bigint, std.string;
void main() {
    format("%d", BigInt(1));
}


It prints:
std.format.FormatError: std.format Can't convert std.bigint.BigInt to string:
"string toString()" not defined

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