C-Style declarations, are they here to stay?!! Walter?
Hasan Aljudy
hasan.aljudy at gmail.com
Fri Mar 31 14:43:10 PST 2006
<< I don't know if this has been discussed before, but I don't remember
seeing any discussion about it. If it has been, please direct me to one
of the old threads that discussed it. >>
I noticed that D supports the klumsy C-Style declarations, like
int (*x[5])[3]; // x is an array of 5 pointers to arrays of 3 ints
I hate them!
To be honest, I never understood them; never tried to. This example is
taken from the docs, and I really don't understand how does it make x an
array of 5 pointers to arrays of 3 ints!!
D has nicer syntax,
int[3]*[5] x; // x is an array of 5 pointers to arrays of 3 ints
I can't say I understand how it works, but when I read the description,
is makes a lot of sense. It reads right to left:
[5] array of size 5
* pointer(s)
[3] array of size 3
int int(s)
array of 5 pointers to array of 3 ints!
The only reason I don't understand it right away is because I don't like
nested complex declarations like this anyway, so I never tried to learn
how to declare them. However, the D syntax makes alot of sense.
Consider for example this C-Style declaration:
int (*x)(char);
VS this D-Style declaration:
int function(char) x;
Why does D support int (*x)(char); anyway?!
Since D has a more intelligent way of declaring the same things, the
C-Style syntax is unnecessarily redundant IMHO.
My understanding is that it's supported to attract the C/C++ people and
get them familiarized with D quickly.
But, does this mean that C-Style declarations are gonna stay with D forever?
I personally would like to see them gone. but that's not for me to decide.
I mean, isn't the C-Style declaration syntax considered to be a design
flaw in the original C? If so, does D really need to carry it out in
order to attract C/C++ people?
That seems to be (to me) totally against the philosophy of D.
So Walter, I would like to please hear your opinion/decision about
C-Style declarations; are they here to stay? or will they be deprecated
at some point?
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