Re: Checking to see if a string is a letter

[Jeffrey Carter <spam.jrcarter.not@spam.not.acm.org>]

On 04/02/2012 09:52 PM, deuteros wrote:
> Leo Brewin<leo.brewin@internode.on.net>  wrote in
> news:2030859.0.1333426683573.JavaMail.geo-discussion-forums@pbbnv8:
>
>> On Tuesday, 3 April 2012 12:11:56 UTC+10, deuteros  wrote:
>>
>>> Is there a way to check if a string variable contains a single letter?
>>
>> Yes.
>
> So how would one do that? In Java I would use regular expressions, and GNAT
> seems to have a library for regular expressions, but I'm looking for
> something a little more portable.

What do you mean by "contains a single letter"?

For example, given

S1 : String := "12345j%^&*(";
S2 : String := "A";

you have 2 String variables, both of which contain a single letter. S1 contains 
other characters as well, while S2 contains only a single letter.

It will probably also help to explain the problem that gives rise to this 
sub-problem, as context is always helpful in knowing how to answer.

-- 
Jeff Carter
"It is the German who is so uncourteous to his verbs."
A Scandal in Bohemia
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