Python is just as good as C++ for real apps

[Grant Edwards]

In article <a2tugq$a2a$0 at 216.39.172.122>, Bengt Richter wrote:

>>int *p,i;  // both i and *p are ints
>>
>>i = 7;     // i has the value 7;
>>*p = 7;    // *p has the value 7;
> Oops, you're thinking Pythonic binding? You are actually using
> an uninitialized pointer and storing an int value of 7 wherever it points.
> You might get a GPF and not get to the rest ;-)

I know -- I left out a few details. :)   I should have added a [...] 

>>(*p) + 1;  // expression with value 8;
> 
>>i + 1;     // expression with value 8;
>>
>>// You have to add parens, but (*p) seems to act like an int in that
>>// expression also.

> You don't have to add parens unless you are using ++ or -- and want the
> latter to apply to the pointer's target rather than the pointer itself,

You're right. I was thinking of ++.

>>That both i and (*p) are ints.
>
> And so is *p without parens.

I added the parens so it would be true in all syntactic
contexts (e.g. ++ and --).

> But: "int *p;" declares a pointer to an int value, and
> reserves space for a pointer. It doesn't declare an integer
> slot to point at. You have to make sure to initialize the
> pointer so it points to a valid integer value (which needs its
> own declaration)

Or you can allocate memory using malloc, calloc, etc. I was
skipping over that part since it had nothing to do with my
point.

> I'll spare you C++ references in the above examples ;-)

Thamks!

-- 
Grant Edwards                   grante             Yow!  Yow! STYROFOAM...
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