Fastest way to do case insensitive search and replace?

Hi,

is there a way to search case insensitively and replace in Strings in
one shot?
If
MethodFinder methodFor: #(('HaLLol' 'll' 'tt') 'Hattol')
doesn't find anything, does that mean "no" right away?

Kind regards
   Markus

> On 11 Dec 2014, at 13:42, Markus Fritsche <[hidden email]> wrote:
>
> Hi,
>
> is there a way to search case insensitively and replace in Strings in one shot?
> If
> MethodFinder methodFor: #(('HaLLol' 'll' 'tt') 'Hattol')
> doesn't find anything, does that mean "no" right away?
>

No, method finder uses a whitelist that is not maintained.

        Marcus

I take it you want to preserve the case of the original?  Otherwise you just convert both source, and replace terms into asLowercase or asUppercase.

('HaLLol' asLowercase copyReplaceAll: 'll' asLowercase with: 'tt' asLowercase) =  'hattol'

So, I'm presuming you want something that keeps the case everywhere it doesn't replace?

How important is performance?  I'd write simple code first then enhance if necessary.  Probably the simplest way to do what you want is to use a regex replace.

(('ll' asRegexIgnoringCase) copy: 'HaLLol' replacingMatchesWith: 'tt') =  'Hattol'

Does this help?

... John

On 2014-12-11 13:48, Marcus Denker wrote:
>> If
>> MethodFinder methodFor: #(('HaLLol' 'll' 'tt') 'Hattol')
>> doesn't find anything, does that mean "no" right away?

> No, method finder uses a whitelist that is not maintained.

Thanks for claryfying.

The answer to my first question:

| r |
r := 'll' asRegexIgnoringCase.
r copy: 'HaLLol' replacingMatchesWith: 'tt'.

Hi Markus,

Yes, that's the one.  I did send you the answer but my post was rejected by the mailing list.  However I see it didn't take you long :-)

I find that Regex library pretty marvellous tbh, one of the best bits of Smalltalk I've come across, and it's so damn fast that it's often better than anything specific I can write.

Does Vassili Bykov hang around on any of these forums?  If I ever meet him, I'm buying him a beer!