ARC vs refc

`std / lists` cannot be used for that either as the RC ops are not atomic and the pointer following does not use atomics. > Even if the length changes during iteration, the code is still correct as we > will never touch memory we have not assigned & is not free'd back. Likewise, the read from t

ARC vs refc

> Also: Don't use linked lists, they are slow. They are, but they have the nice property of retaining the underlying memory as you add to the container, unlike a seq on a realloc due to exceeding capacity. But of course, for this property, it would be better to opt a container similar to `std::

bulk .importc

`{.push importc, header: "".} var SYS_read : clong SYS_write : clong SYS_open : clong SYS_close : clong SYS_stat : clong {.pop.} ` Run

X11 - XQueryTree produces "illegal storage acess" segfault when run

numChildrenReturn: Pcuint Run is wrong, you need to allocate storage for it. I would use: numChildrenReturn: cuint Run And then `addr(numChildrenReturn)` in the call to `XQueryTree`. And frankly, such a mistake indicates that you're not re

X11 - XQueryTree produces "illegal storage acess" segfault when run

as araq pointed out, you dont declare pointers and pass them, you allocate objects and pass pointers to them, in this case for every returned value. this is not a nim related issue, you can see this if you look at any C code that uses this. import x11/xlib, x11/x

X11 - XQueryTree produces "illegal storage acess" segfault when run

Hi again, I have some code to test if XQueryTree works, but it produces this error: SIGSEGV: Illegal storage access. (Attempt to read from nil?) Segmentation fault (core dumped) The error is produced in the line with the XQueryTree-Call. The code looks like this:

bulk .importc

push it?

bulk .importc

I want to import some constants from Linux C headers, so I write code like this: var SYS_read {.importc, header: "".}: clong SYS_write {.importc, header: "".}: clong SYS_open {.importc, header: "".}: clong SYS_close {.importc, header: "".}: clong SYS_stat

ARC vs refc

Apologies if I'm asking something super basic but why does the following code work fine with refc but crash with a stack overflow when using ARC? import lists var l = initSinglyLinkedList[int]() for i in 1..1_000_000: l.add i Run What would be t

ARC vs refc

ARC sucks lol. No seriously, the linked list impl wasn't really patched to support ARC. Also: Don't use linked lists, they are slow.

Error: cannot open file: x11

in this x11 package, there is no x11.nim file, only x11 as a folder, so you can not call import x11, you will have to import the files inside that folder like: import x11/xlib, x11/xutil, x11/x, x11/xft, x11/xrender

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