OpenEuphoria

Re: variable start values

• Posted by Pete Lomax <petelomax at blueyonder.co.uk> Dec 10, 2003
• 491 views

On Thu, 11 Dec 2003 07:51:20 +1100, Derek Parnell
<ddparnell at bigpond.com> wrote:

>
>
>----- Original Message ----- 
>From: "Ron Austin" <ronaustin at alltel.net>
>To: <EUforum at topica.com>
>Subject: RE: variable start values
>
>
>> Pete Lomax wrote:
>> > 
>> > 
>> > On Wed, 10 Dec 2003 16:33:19 +0000, Jason Dube
>> > <dubetyrant at hotmail.com> wrote:
>> > 
>> > >  if x[1][1] < 90 then
>> > 
>> > It took me a moment to figure that out. I suggest you use 
>> > "if x[1][1] < 'Z' then" instead, and probably <= as well.
>> > 
>> > Regards,
>> > Pete
>> > If he wants to trap non capital letters shouldn't it be <65 or > 90  -- 
>> > <'A' or >'Z' this would trap lower case plus misc numbers, punctuation , 
>> > etc.
>> 
>
>I believe that 
>
>    if find(x[1][1], upper_case_chars) = 0 then 
>
>is the safest method, because it does not restrict itself to ASCII coding or to
>English. All that is needed is to load the sequence 'upper_case_chars' with the
>values that the current user believes are uppercase characters at runtime. The
>default can be "ABCDEFGHIJKLMNOPQRSTUVWXYZ" but should be changable under user
>control.

Yep. My favored method is:

sequence charset
	charset=repeat(ILLEGAL,256)
	charset['A'..'Z']=UPPER

then,
	if charset[x[1][1]]=UPPER

obviously, ILLEGAL=-1, UPPER=7 (etc) as previously defined constants.

Pete