special character

fmartinsferreira · Post by **fmartinsferreira** » Thu Nov 16, 2006 3:08 pm

Is there any function to recognize special character?

Regards,

Fernando Martins

ray.wurlod · Post by **ray.wurlod** » Thu Nov 16, 2006 3:42 pm

What do you mean by "special"? The Alpha and Num functions can isolate whether a string is alphabetic or numeric. The expression (Oconv(string,"MCP") = string) can report whether a character is printable. Some special characters live in particular code point ranges, for example "control set 0" comprises all the characters whose code point is 31 and below.

fmartinsferreira · Post by **fmartinsferreira** » Thu Nov 16, 2006 7:47 pm

I mean by "special" = a character that isn't on the keyboard. :D

Regards,

Fernando Martins

ray.wurlod · Post by **ray.wurlod** » Thu Nov 16, 2006 9:31 pm

So, effectively, the non-printing characters.

Code: Select all

(Oconv(ch, "MCP") = ch)

will identify that the character is non-printable. The expression returns 1 (true) if the character is non-printable, 0 (false) otherwise. It returns NULL if ch is NULL.

fmartinsferreira · Post by **fmartinsferreira** » Tue Nov 21, 2006 4:41 am

Thanks!