There are a couple of operators mentioned on <http://www.digitalmars.com/d/lex.html> that I haven’t seen described in the documentation: ‘===’, ‘!~’, and ‘~~’.  Any pointers on what they are?

--Joel

"Joel C. Salomon" <JoelCSalomon@Gmail.com> wrote in message news:eprrth$2qfp$1@digitaldaemon.com...
> There are a couple of operators mentioned on <http://www.digitalmars.com/d/lex.html> that I haven't seen described in the documentation: '===', '!~', and '~~'.  Any pointers on what they are?
>
> --Joel

=== is an ancient version of 'is' (and !== is what '!is' used to be).  They were removed quite some time ago.

~~ and !~ were for regular expression matching.  They lasted one release before they were removed.

Jarrett Billingsley wrote:
> "Joel C. Salomon" <JoelCSalomon@Gmail.com> wrote in message news:eprrth$2qfp$1@digitaldaemon.com...
>> There are a couple of operators mentioned on <http://www.digitalmars.com/d/lex.html> that I haven't seen described in the documentation: '===', '!~', and '~~'.  Any pointers on what they are?
>>
>> --Joel
> 
> === is an ancient version of 'is' (and !== is what '!is' used to be).  They were removed quite some time ago.
> 
> ~~ and !~ were for regular expression matching.  They lasted one release before they were removed. 

Thanks.

I’m building a lexer for a C compiler (for a Compiler Theory class I’m taking) and I hoped I could make it more-or-less D-compatible, but ~~ and !~ could break C code; glad to know I can leave them out.

--Joel

Jarrett Billingsley wrote:
> "Joel C. Salomon" <JoelCSalomon@Gmail.com> wrote in message news:eprrth$2qfp$1@digitaldaemon.com...
>> There are a couple of operators mentioned on <http://www.digitalmars.com/d/lex.html> that I haven't seen described in the documentation: '===', '!~', and '~~'.  Any pointers on what they are?
>>
>> --Joel
> 
> === is an ancient version of 'is' (and !== is what '!is' used to be).  They were removed quite some time ago.
> 
> ~~ and !~ were for regular expression matching.  They lasted one release before they were removed. 

Those should be yanked from the page, so... bug filed: http://d.puremagic.com/issues/show_bug.cgi?id=913