main declaration

Steven Schveighoffer schveiguy at
Fri Mar 19 07:12:37 PDT 2010

On Fri, 19 Mar 2010 08:43:25 -0400, bearophile <bearophileHUGS at>  

> Steven Schveighoffer:
>> You are allowed to modify the args, they are guaranteed not to be in  
>> ROM.
>> The true signature, if there existed such a thing, should be
>> unique(char[])[] args.  Because D arrays are safe, you are in no danger  
>> of
>> corrupting memory, unlike C.
> In D2 all strings are immutable(somechartype)[], so how can you justify  
> the args[x] to be an exception to that rule?

All string *literals* are immutable.  The reason is so the runtime does  
not have to use the heap every time you use a string literal.  You can  
certainly have/use mutable strings.  program arguments are runtime  
decided, and are passed in one place, so they do not have to be  
immutable.  Making them immutable, while possible and preferred by some,  
is not a requirement, and shouldn't be forced on the programmer.


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