How to test if a field does not contain anything else than returns or tab ?
Andre.Bisseret at inria.fr
Tue Feb 3 09:18:21 EST 2009
I need to test if a given list field in a stack contains some values
or if it is empty.
Well, by "empty" I mean that the field contains not any word or
number. But it happens that it may include carriage returns and/or tabs.
In such cases :
field "thisField" is empty
If there were only carriage returns, I could test if each line of the
field is empty;
line x of fld "thisField" is empty
returns true if the only character in the line is cr
but returns false if there is at least one tab in the line.
I just tried :
if last char of fld "thisField" is empty ;-))
that seems working well ! but a bit strange and might be not reliable ?
Is there a better trick ?
Thanks for any idea
Best regards from Grenoble
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