for in D versus C and C++

Georg Wrede georg.wrede at iki.fi
Mon Mar 23 15:48:49 PDT 2009


Walter Bright wrote:
> Sean Kelly wrote:
>> I've found that once I created one lexer it could be re-used pretty 
>> easily for other languages too.  And recursive descent parsers are 
>> trivial to write.  It may be overkill for command-line parameters, but 
>> for anything remotely structured it's generally worth using.
> 
> When I was looking into parsing date strings, I thought it would be much 
> easier if I adopted a lex/parse style approach. The result is in 
> std.dateparse. The payoff is I've had very little trouble with it.

It's a shame that this kind of lexing/parsing seems to need gotos. I 
always feel guilty if I put a goto in my code. (Guess I've had too stern 
teachers, or something...)



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