[Python-Dev] PEP 455: TransformDict

[Nigel Small]

It strikes me that there could be an alternative approach to some of the
use cases discussed here. Instead of a new type of dictionary, the
case-insensitivity problem could be solved with something akin to a *
CaseInsensitiveString* class used for keys within a standard dictionary.
This would be very similar to a normal string except with comparison and
hashing. It would mean that CaseInsensitiveString("Foo") is considered
equal to CaseInsensitiveString("foo") and allow code such as the following:

>>> headers = {}
>>> headers[CaseInsensitiveString("content-type")] = "text/plain"
>>> headers[CaseInsensitiveString("Content-Type")]
"text/plain"

This would obviously also be usable in other places where case-insensitive
strings are required.

Just my two pence/cents/other minor currency units.
Nigel


On 30 October 2013 14:18, Ethan Furman <ethan at stoneleaf.us> wrote:

> On 10/30/2013 12:12 AM, Raymond Hettinger wrote:
>
>>
>> Hopefully, this post will make the thought process more transparent.
>>
>
> Thanks, Raymond.  Your time is appreciated.
>
> --
> ~Ethan~
>
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