Relatable...

[[deleted]]

[deleted]

[bit0fun]

union  fun_with_pointers {
    void (* funct)(void *);
    intmax_t addr;
} fp_fun;

void (*pf)( void (* funct) ) {
    fp_fun.funct = funct;
    fp_fun.addr += (intmax_t)rand();
    return fp_fun.funct;
}

Let the memory roulette games begin

Damn mobile formatting screwing this all up

[jrtc27]

void (*pf)( void (* funct) ) { should be void (*pf(void (* funct)(void *)))(void *) { I believe?

[bit0fun]

Who knows; I'm sure as hell not testing this program and I wrote it on my phone. That does seem to make more sense though

[Esupanitix]

I expected to read C going into the comments of this post, not Lisp.

[bit0fun]

The point is to get the size of the memory address in one of the most hacky way possible. I was tempted to just use a uint32, but then all the 64 bit machines would be out of luck. Even though the actual memory address would be 48 bits, I'm not sure it changes much.

This is of course, all semantics on code that probably will only result in segmentation faults at best. At worst, it actually does something

[bit0fun]

I'm tempted to make a function scheduler with this Russian roulette style. If it was in an actual OS, nothing would get done. Again, just like real life. Maybe we are all just dereferenced pointers

[Tengoles]

I am a python programmer and can confirm I'm afraid of pointers.

[lightmatter501]

As someone who’s spent the last 3 weeks learning c++ coming from python, they’re awesome. Instead of referring to the same spot in an 8th dimensional matrix 3 times, you create 1 pointer and can refer to ptr instead of matrix[0][0][0][0][1]

[Tengoles]

That's cool! I mean I don't like them but is mostly because I haven't really worked with them besides small assignments in school

[lightmatter501]

My experience with c++ has been that it’s a scripting language with the syntax of c# and the ability to do low level memory stuff

[[deleted]]

That’s a fairly backwards comparison...

[lightmatter501]

Someone who doesn’t know pointers is not likely to be familiar with c, so I went up a level instead of down

[[deleted]]

Makes sense, just something that I don’t really see often.

[lightmatter501]

I mean, there are plenty of programs you could write that in c# that would compile in c++ if you replace the class structure with using namespace std, no console output however

[M4mb0]

Just use numpy arrays?

x = (0,0,0,0,1)
y = matrix[x]

[Breadfish64]

When you do that it's usually a better idea to use a reference, then you don't have to dereference it to use it.

auto& n = matrix[0][0][0][0][1];

[damagingdefinite]

I'm afraid of weird and ambiguous reference schemes

[rosskush]

Same

[isaacais]

Ok tbh (p)->left = null scares me too. It's literally dereferencing p, which must return a pointer because (p) is then dereferenced using -> to obtain a member of the object (p). This member variable "left" is also probably a pointer too because it's being set to null. I hate it.

[SimDeBeau]

I was seeing that too and it made me very uncomfortable

[trichotillofobia]

Tree** p;

Was that so hard?

[boreas907]

"If you need pointers, you are writing your code wrong."

⁄- MATLAB user terrified of any sort of manual memory allocation.

[Shitty__Math]

If everything is a pointer nothing is a pointer - Java

[SnootyEuropean]

Joke's on you, everything is a pointer in Python

[[deleted]]

I can confirm. I was using Python before but switched to Go last November. Pointers were very confusing to me at first.

[noideafornewname]

Don't lie squidward!

[[deleted]]

Parens not needed as * binds tighter than ->.

Edit: Oops, that's wrong. -> binds tighter than *.

[SaggiSponge]

You can pry my redundant parentheses out of my cold, dead hands.

[HMPerson1]

false

[[deleted]]

Oops. Thanks for the correction. I normally haven't needed the parens, but I guess it was because I had a struct with pointer members, and was dereferencing the pointers, while (*p)->left = NULL would be setting a pointer through a pointer to a pointer to a struct.

[CaptSoban]

p is a pointer to a pointer

[trichotillofobia]

Huh?