[fpc-devel] Some new

J. Gareth Moreton gareth at moreton-family.com
Tue Mar 5 09:26:37 CET 2019

 Heh, okay, I stand corrected.  Thanks Michael.  Seems I need to read up
on all the functions in the standard units.  Sorry for wasting everyone's

 I do wonder though if it's worth adding " in " to SysUtils, since it's a
very convenient and intuitive notation... not just for Chars but for all
basic types, actually.

 Gareth aka. Kit

 On Tue 05/03/19 09:05 , "Michael Van Canneyt" michael at freepascal.org sent:

 On Tue, 5 Mar 2019, J. Gareth Moreton wrote: 

 > Ah, okay.  In my case, it doesn't work if the set you specify is a 
 > constant or variable defined elsewhere. 
 > e.g. 
 > const Delimiters: array[0..5] of Char = [#9, #10, #12, #13, #26, #32]; 
 > if C in Delimiters then... 
 > If you do that, you get a compiler error about 'in' not being overloaded

 > or some such. 

 That's because you're defining an array, not a set. 

 To define it as a set do: 

 Delimiters = [#9, #10, #12, #13, #26, #32]; 

 Your c in delimiters will work because this is a set. 

 The FPC source tree is full of such constructs. 

 The sysutils unit has CharInSet() BTW, if you want to use an array. 


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freepascal.org/pipermail/fpc-devel/attachments/20190305/a19d75c8/attachment.html>

More information about the fpc-devel mailing list