Checking, whether string contains only ascii.

[aberba via Digitalmars-d-learn]

On Wednesday, 22 February 2017 at 20:01:57 UTC, Adam D. Ruppe 
wrote:
> On Wednesday, 22 February 2017 at 19:26:15 UTC, berni wrote:
>> herefore I'd like to make sure that the string the program 
>> read is only made up of ascii characters.
>
> Easiest:
>
> foreach(char ch; postscript)
>   if(ch > 127) throw new Exception("non-ascii detected");

:)