[IronPython] repr() results with uint, etc.

Michael Foord fuzzyman at voidspace.org.uk
Sat Feb 7 15:04:10 CET 2009


Dino Viehland wrote:
> And the correct change to the source code would be adding __repr__ methods to the various *Ops types (Int16Ops, UInt16Ops, etc...) which return the correct formatting.  Presumably by updating the scripts that generate these types.  OTOH there's nothing particularly unsafe about your changes other then they don't match the normal convention for __repr__.
>   

+1 for the changes.

There are various other minor places where uints don't behave like 
numbers, which would be nice to address - especially for Ironclad (and 
making 64bit support a bit less painful for William).

Michael

Michael Foord
> -----Original Message-----
> From: users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com] On Behalf Of Curt Hagenlocher
> Sent: Friday, February 06, 2009 9:36 PM
> To: Discussion of IronPython
> Subject: Re: [IronPython] repr() results with uint, etc.
>
> On Fri, Feb 6, 2009 at 9:32 PM, Jeff Slutter <jslutter at reactorzero.com> wrote:
>   
>> Ok, looking at the source, I see the issue in:
>>
>> public static string Repr(CodeContext/*!*/ context, object o)
>>
>> Is it safe to add these types in to there like:
>>            if ((s = o as string) != null) return StringOps.__repr__(s);
>>            if (o is int) return Int32Ops.__repr__((int)o);
>>            if (o is uint) return ((uint)o).ToString();
>>            if (o is long) return ((long)o).ToString() + "L";
>>            if (o is ulong) return ((ulong)o).ToString() + "UL";
>>            if (o is byte) return ((byte)o).ToString();
>>            if (o is sbyte) return ((sbyte)o).ToString();
>>            if (o is char) return ((char)o).ToString();
>>            if (o is Int16) return ((Int16)o).ToString();
>>            if (o is UInt16) return ((UInt16)o).ToString();
>> ?
>>     
>
> It's traditional (when possible) for repr to return a string
> representation of something that can be typed into the interpreter to
> get the original object back.  This is what distinguishes it from str.
>  That's why Dino suggested the form he did.
>
> --
> Curt Hagenlocher
> curt at hagenlocher.org
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