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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: gettext for Ada
Date: Tue, 28 Nov 2017 16:41:04 -0600
Organization: JSA Research & Innovation
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Date: 2017-11-28T16:41:04-06:00
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
news:ovk4ss$b9u$1@gioia.aioe.org...
> On 2017-11-28 01:48, Randy Brukardt wrote:
>
>> The above is quite common in my code (perhap premature optimation on my
>> part, knowing that a function like To_Upper is many times more expensive
>> than a string compare).
>
> I convert the source line to the preferred case as I read it in and then 
> work with that source.

The is my preference, but there a lot of cases (like command line 
processing) where some parts are in mixed case (which you need to preserve) 
and other parts are case insensitive. Then you get the sort of code I 
showed, because individually converting slices is expensive and usually 
unnecessary (options usually are one or two characters in Janus/Ada 
programs).

                             Randy.