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<linux-newbie2020>
How do I create an ArrayList with the general purpose allocator and free it afterwards? Or is using std.testing.allocator the recommended way? Since that one uses gpa on its backend and is easy to use.
<pfg_>
linux-newbie2020, std.testing.allocator is for test {} blocks. for main(), do: var gpalloc = std.heap.GeneralPurposeAllocator(.{}){}; defer std.testing.expect(!gpalloc.deinit()); const alloc = &arena.allocator; var array_list = std.ArrayList(u8).init(alloc); defer array_list.deinit();
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<dominikh>
there's no notion of multi-file "packages" in Zig, right? the only way to use identifiers from another file is to @import it?
<marler8997__>
usingnamespace is what you want I think
<dominikh>
well yeah, but at that point I'm wondering if the API should be designed to read well with or without usingnamespace
<linux-newbie2020>
pfg_: additional question, how would I adapt that example for use inside a function that returns the ArrayList? Or would it be cleaner to just hand the allocator to that function?
<pfg_>
usually you pass the allocator to the function
<pfg_>
you can also store the allocator in a global variable if it makes sense for your code, but don't do that if you're making a library
<linux-newbie2020>
thanks again!
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<teratorn>
so, im exposing a zig lib to C API. one of the structs that I want to expose has a hashmap member, which can't be exported (?) how can I get around that?
<teratorn>
.\amp.zig:50:5: error: extern structs cannot contain fields of type 'std.fifo.LinearFifo(std.hash_map.HashMap([]const u8,[]const u8,std.hash_map.hashString,std.hash_map.eqlString,80),std.fifo.LinearFifoBufferType { .Dynamic = {}})'
<teratorn>
box_buffer: AmpBoxFifo,
<teratorn>
^
<teratorn>
.\amp.zig:307:23: note: referenced here
<teratorn>
var dec = AmpCodec.init(alloc);
<teratorn>
well its a LinearFifo actually
<teratorn>
I want to export the struct opaquely to C
<teratorn>
but I don't know how except by casting to c_void or whatever
<teratorn>
do i create an empty struct and use that as a casting target to achieve opaque pointers with a unique name?
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<novaskell>
`const AmpBox = struct` doesn't contain any fields which makes it take 0 bits
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<novaskell>
using `pub var thing = stuff;` just declares `thing` as a global variable and not as a field member of the struct `AmpBox`
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<teratorn>
uhm but it has a variable member inside
<teratorn>
oh
<teratorn>
.\amp.zig:29:13: error: expected token '}', found ';'
<teratorn>
a: usize;
<teratorn>
^
<pfg_>
teratorn, `,`
<teratorn>
i cant seem to declare a struct with one usize member
<teratorn>
oh right
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<pfg_>
It should probably be possible to improve the error message for that
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<alexnask[m]>
ifreund: Hey, I was just wondering if semantic token highlighting with the custom token modifiers (e.g. type.struct) works ok for you in kak-lsp
<alexnask[m]>
Kate in the discord apparently can't get it to work even after adding the token modifiers to the toml file
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<TheLemonMan>
Is kakoune's fork for edgelords called kek?
<ikskuh>
kek
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<dominikh>
hm, so std.ChildProcess has neither a fd I can poll for process termination, nor a way to specify which fds I want to be passed to the new process, right?
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<TheLemonMan>
dominikh, the latter is an interesting feature request, the former should be easily handled by calling wait()
<TheLemonMan>
you can always cheat and assume the child process is dead when the std handles are closed
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<dominikh>
TheLemonMan: I mean, I can't just call wait if I want to continue doing other things on that thread. the options then are a sigchild handler (which isn't that great), or a pipe (or maybe signalfd) and polling for it to get closed when the child exits.
<dominikh>
or I could go all in on pidfd and annoy non-Linux users…
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<trickyfungus>
hi!
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<alexnask[m]>
hihi
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<ikskuh>
alexnask[m]: looks like we were on the right side of the split :)
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<alexnask[m]>
best side
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<TheLemonMan>
pro tip, remember to unmount every bind-mounted device from your chroots before rm -rf'ing them
<TheLemonMan>
rebooting, wish me luck
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<demizer>
hey guys, I am using `pub const log_level: std.log.Level = .debug;` in a logger.md file and importing that into my other source files to access wrappers to std.log. But the log_level is not taking affect. Not sure what "root.log_level" is in the log source, but I suspect I might be using it wrong. Any help would be greatly appreciated!
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<demizer>
does anyone know how to replace the root.log when running tests in a library with "zig test test.zig". I am utterly confused. I can reset std.testing.log_level but not std.testing.log. It has something to do with the root source file but test.zig doesn't seem to be that for zig test in my case.
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<ugla>
What's the easiest way to readFloat(bits)?
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<g-w1>
I have a question about how the stage2 ir works. Does a Decl have to be something like error {Thing1, Thing2} or struct {x: u32}, or can it be something like (error {P} || InnerError)? Does the user have to create the decl, or can it be created as the product of other things? (in my case can merging error sets create another Decl?)
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<pfg_>
q-w1 I believe `error {P} || InnerError` would be represented as `@1 = error {P}; @2 = InnerError; @3 = @1 || @2`
<pfg_>
I'm not sure how decls work right now though so I might be wrong or that might not be useful
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<pixelherodev>
g-w1: a decl is anything which can be used as a rhs value, as I understand it
<g-w1>
ah, so it would be a decl, just anon?
<pixelherodev>
e.g. `const a = (error{P}||InnerError}` would have a decl for the value of a, I think?
<g-w1>
ok. cool
<pixelherodev>
When in doubt, follow a path through the code
<pixelherodev>
Not necessarily with a debugger, though that can help, but just reason it out
<pixelherodev>
Look at astgen's existing patterns, for instance
<ikskuh>
heya pixelherodev o/
<pixelherodev>
ikskuh: Hi!
<pixelherodev>
Finally going to get more CBE work done tonight! :D
<ikskuh>
whoo! \o/
<ikskuh>
I'm hacking a SD card driver
<pixelherodev>
spu?
<g-w1>
im trying to just copy the way to create a regular error set, and then make another, but its not woring :(. the cbe seems very nice. i cant wait to play telephone with translate-c and the cbe :]
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<ikskuh>
i'll answer in a second :D
<freshmaker666>
np no rush, just enjoying my night
<ikskuh>
european? :D
<freshmaker666>
well, a european bouncer ;)
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<ikskuh>
heh
<ikskuh>
those list literals are … magic
<ikskuh>
they can coerce to anything that fits
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<ikskuh>
so you can do
<ikskuh>
var array: [3]u8 = .{ 1, 2, 3 };
<ikskuh>
var array: [2]f32 = .{ 1, 2 };
<freshmaker666>
ah!
<ikskuh>
note that you can *also* store them
<ikskuh>
without coercion
<ikskuh>
var magic = .{ 1, 2 };
<ikskuh>
this is special
<ikskuh>
how firm are you with the language already?
<freshmaker666>
oh not firm at all. I heard about it and then just popped open the documentation to see what was up. I think I found out about it through an ouroborus quine program or maybe it was someone doing a cipher spec in zig.
<g-w1>
is lldb a work in progress? whenever i use it it just crashes.
<ikskuh>
huh?
<ikskuh>
hm
<ikskuh>
i think so
<ikskuh>
i always use gdb
<g-w1>
i was using gdb, but its hard to edit the commands on the gdb line input, and so i thought i would try lldb, but it just oofed. maybe zig triggers it https://share.olind.xyz/f.php?h=1OIy-F6T&p=1
<g-w1>
lldb seems to be a lot more modern, but less reliable. do you know of any good standalone frontends for gdb?