no, this concept might be hard to get for beginners
^
MᏫᎻᎯᎷᎷᎬᎠ
BinaryByter
every byte of ram above 16k*
BinaryByter
below 16k, you might have some memory mapped
BinaryByter
also, above 16k you might have some broken memory or some mapped devices too
Mihail
also, in some scenarios you might want the array to start at pointer n, but you don't know how long it will be
Well if you want something like that you should really have re implemented a vector-like container
BinaryByter
really, you should check every memory adress at start before using them
BinaryByter
Well if you want something like that you should really have re implemented a vector-like container
adds bloat for something this simple. but int* a[1]; is good enough
MᏫᎻᎯᎷᎷᎬᎠ
in kernel dev, every byte of ram is yours to have
Like
The whole main memory above 16k is yours
You can do whatever you like with it?!
Mihail
BinaryByter
MᏫᎻᎯᎷᎷᎬᎠ
Lol
MᏫᎻᎯᎷᎷᎬᎠ
That's great
MᏫᎻᎯᎷᎷᎬᎠ
Then
BinaryByter
do you think that allocation is done by hardware?
BinaryByter
it is facilitated by it (MMU and stuff), but its not done by it
MᏫᎻᎯᎷᎷᎬᎠ
Then
How the runtime memory model is structured?!
BinaryByter
runtime memory model can be absolutely anything
BinaryByter
use a better word please
BinaryByter
C11 only
Stanislav
BinaryByter
my bad then
BinaryByter
sorry 😂
Daniele°
Is very unsafe feature
BinaryByter
depends on where you use it
BinaryByter
but i agree with you
Mihail
In standard C++
Mihail
Well yeah
Dima
Lol.
Dima
I wonder why would you need vla nowadays in C
BinaryByter
toldya :D
BinaryByter
just read
BinaryByter
lol
Dima
Ikr, but nevermind
BinaryByter
auto or void*
:troll:
void* a = my_malloc(100);
will not compile if my_malloc returns int*
Dima
Cast to (void* )
Dima
Dima
#define myMalloc
Dima
*Ugliness intensified*
Daniele°
#define NEW(T) (T*)malloc(sizeof(T))
...
...
int* i = NEW(int);
Dima
Daniele°
#define MANY(T,S) (T*)malloc(sizeof(T)*(S))
...
...
int* i = MANY(int,10);
Dima
I saw talkings about alloca
Is there difference between ::alloca or
char buffer[const size];
... = new (buffet) Obj; ?
BinaryByter
buffet?
😂
Mihail
Me like
BinaryByter
I like food too :D
Mihail
#define MANY(T,S) (T*)malloc(sizeof(T)*(S))
...
...
int* i = MANY(int,10);
I feel like I'm loosing brain cells faster than ever
Daniele°
Daniele°
😂
Mihail
where do you think the new() of C++ was born?
Most definitely not in an ugly preprocessor thing
Dima
Soo..
BinaryByter
Right
BinaryByter
C is a superset of a macro assembler
BinaryByter
someone recently claimed it here
Mihail
Got scared for a second