(Solved)Trouble with syntax

[JLWest]

 I want to check that the first character in a string is 'A'..'Z', 'a'..'z' but I get an error:
unit2.pas(596,17) Error: Operator is not overloaded: not "ShortString"

Code: Pascal  [Select][+][-]

1.  Var  First : ShortString; = 'Just a String';
2.  
3.    if not First in (['A'..'Z', 'a'..'z']) then  begin
4.       Result := False;
5.       X := 2;
6.       exit;
7.    end;

Thanks

[Paolo]

If I understood you have to do something like

Code: Pascal  [Select][+][-]

1.  Var  First : ShortString; = 'Just a String';
2.  
3.    if not First[n] in (['A'..'Z', 'a'..'z']) then  begin
4.       Result := False;
5.       X := 2;
6.       exit;
7.    end;
8.  

Where n is the index of character position in the string First. In your case n=1

[JLWest]

Yea, I see it. Thanks

[JLWest]

Changed the line and now I get a type mismatch error

Code: Pascal  [Select][+][-]

1.   Var First : ShortString = 'Just a string';
2.  
3.    if not First[1] in ['A'..'Z', 'a'..'z'] then  begin Result := False; X := 2; exit; end;
4.  

[MarkMLl]

Changed the line and now I get a type mismatch error

Which reads like... ?

Try

Code: Pascal  [Select][+][-]

1.   Var First : ShortString = 'Just a string';
2.  
3.    if not (First[1] in ['A'..'Z', 'a'..'z']) then  begin Result := False; X := 2; exit; end;
4.  

MarkMLl

[JLWest]

Yea, That compiles. I think I'm good.

[marcio2003]

To complete, perform tests with empty string and UTF8 char string.