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<mkchan>
Huh... const stdout = std.io.getStdOut().writer(); fails on windows if I do it outside any method
<mkchan>
Unable to evaluate constant expression pointing to some .x86_64 => ask volatile line
<mkchan>
Asm*
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<andrewrk>
yeah windows is the main reason that getStdOut() is a function call rather than a global
<mkchan>
Dammit windows... So I'll have to make it inside my print wrapper each time I guess
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<leeward>
Yup, it's not awesome.
<leeward>
It's one of the reasons why there's no std.io.in or std.io.out
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<mkchan>
Now I'm actually not sure how to read until a line feed. On Linux reading till \n is good for my application because even when I use a console and type a command and press enter it sends \n
<mkchan>
On windows my application still needs to read till \n but the terminal sends \r at the end and the readUntilDelimiterOrEof method only allows specifying a single delimiter
<leeward>
Yeah, I've had trouble with multiple character delimiters before...I might have hacked it.
<pixelherodev>
leeward: because it means that you can't CR without LF
<pixelherodev>
And I [ab]use CR all the time :P
<pixelherodev>
They will almost certainly try to extinguish.
<pixelherodev>
It really comes down to whether or not the communities are willing to put in the work to clean up the mess they make, which I suspect many will
<pixelherodev>
I mean, systemd tried EEE too.
<pixelherodev>
Whether or not you agree with them, the fact remains that they had as a fundamental goal extending Linux itself and extinguishing any platform which didn't include them.
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<pixelherodev>
Yet there are still numerous distros without it, simply because people put in the effort to make and / or maintain them.
<pixelherodev>
In order for EEE to work, people have to accept the extensions themselves.
<pixelherodev>
If MS attempts EEEing Linux itself, it wouldn't be *impossible*, but the challenge would be much higher than I suspect most people think it would be
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<mkchan>
How do I tell zig to compile specifically using certain options like bmi, popcnt and see and such?
<mkchan>
Sse*
<mkchan>
I can see target and -mcpu but what I'm looking for is specific feature flags like -mbmi -mbmi2 -mpopcnt and such
<wilsonk>
andrewrk: any chance you can do a video once #6250 lands to let us know the differences and features? :) ... I realize I could just read the release notes and code, but it might be more digestible for some people to hear it from you
<wilsonk>
oh, sorry I just noticed on discord that there 'is a lot more work to do' so I suppose I am jumping the gun there
<andrewrk>
yep!
<andrewrk>
mkchan, -mcpu=? should give you a list of cpu features
<fengb>
Is it an internal restructuring where we won't notice it happening?
<andrewrk>
mostly. I'm going to break some obscure things
<andrewrk>
there will probably be a few regressions, for which fixing will then be in zig code instead of c++ :)
<wilsonk>
nice
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<pixelherodev>
In other words, c++ is going to a nice little server farm upstate.
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<andrewrk>
with the merge of #6250 it will finally be time to `mv src-self-hosted src` :-o
* pixelherodev
claps enthusiastically
<pixelherodev>
Sorry for my absence lately, been busy finishing up the move (so. much. to. organize. gahhh) and with uni :(
<pixelherodev>
I'm hoping to resume work on CBE + SPU II in a week or two once I've had time to gain on my schedule a bit
<andrewrk>
it's honestly been pretty good timing, because I've been working tirelessly on this monster branch that is guaranteed to massively conflict with anyone else's stage2 work
<pixelherodev>
lol, yeah.
<pixelherodev>
That's one reason I was eager to pick up the ZBS work earlier
<pixelherodev>
Small (not a big time sink), and not actually part of stage2 :P
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<andrewrk>
I've really been pushing myself, gonna need to take a break after this
<pixelherodev>
You've *more* than earned it
<pixelherodev>
I mean, wow.
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<nikki93>
it's really nice that when you gotodef of std stuff (eg. `AutoHashMap`) you can just scroll down and look at the tests
<nikki93>
the basic test often teaches how the data structure works and the rest show some invariants etc.
<andrewrk>
:)
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<ask6155>
Hello! I remember there being a page about editor support... can someone give me a link to it?
<Nypsie[m]>
Don't think there is actually. Most syntax highlighters for different editors are however hosted under ziglang: https://github.com/ziglang
<Nypsie[m]>
Perhaps you could tell us the specific editor support you're looking for? There's also support for some editors which are not listed in either
<ifreund>
if you're asking about fancy LSP stuff, there is zls
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<ask6155>
How do I make true to false and false to true? like a not?
<ask6155>
Do I always have to make slices from arrays?
<Michcioperz>
for functions that take slices
<ask6155>
okay
<Michcioperz>
it would be hard to make most of these functions accept arrays because the size of an array is part of the type definition and has to be known at compile-time
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<ifreund>
also you don't want to pass the array by value, you want to pass a pointer to the array
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<frett27>
Hi community, i'm writing an iot deamon, as i'm learning zig, i'd like to have external opinion on review on the produced code. Are there any nice guys to have look and make some advises to make it much more idiomatic ? https://github.com/mqttiotstuff/iotmonitor/tree/develop thank you
<frett27>
i would like to communicate much about it as my testing phase reached quite a stable usage for months
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<wilsonk>
frett27: looks interesting...I am probably not the one that should comment further but I just wanted to let you know someone is here :) It might be a little while before someone has time to look at that, but hang in there, the community is usually pretty good with requests like this
<frett27>
hi wilsonk, thank's for the ping, yep the channel seems very quite
<frett27>
there are no strong commitments, but wanted to give the best for this
<frett27>
i know there is the 0.7 on stage, as soon as the llvm commit the 11
<frett27>
and zig show time tomorrow :-)
<ifreund>
I haven't noticed anything glaringly amiss, but the camelCase variable names did throw me off
<ifreund>
looks like a neat project
<frett27>
ifreund thank's, i'm committed on this
<frett27>
and for my personal usage found it usefull
<ifreund>
not a fan of underscores I guess? :P
<frett27>
in names ? or _ = ....
<ifreund>
i'm talking about snake_case vs camelCase for variable names still
<frett27>
got it
<ifreund>
hmm, the allocator handling in iotmonitor.zig also feels a bit strange
<ifreund>
why not just init the gloabal to std.heap.c_allocator?
<frett27>
sorry the allocator it inited on the main's first line
<frett27>
i may have allocated it in the declaration also
<ifreund>
yeah, I see that but I'm saying it's confusing and unecessary when you can just do `const globalAllocator = std.heap.c_allocator;`
<ifreund>
I prefer to call the const gpa though, as only general purpose allocators make sense to be global in most cases
<frett27>
i got the point, maybe i wanted to have it previously "var" to benchother ones, but as soon as, the c makes sense, you got the point
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<frett27>
thank's for the feedback, ifreund
<ifreund>
no problem, though it was fairly superficial
<justin_smith>
using a c lib that returns a [*c]const u8, how do I get print to print that string instead of u8@19c41788
<justin_smith>
I'm doing "print("assigned name '{}'\n", .{p});"
<justin_smith>
never mind, the trick was [*:0]const u8 instead of [*c]const u8
<justin_smith>
it's fun that the compiler's that smart
<ifreund>
justin_smith: you could also to print("{s}\n", .{p});
<ifreund>
see the doc comment in std.fmt, it's quite informative
<ifreund>
s/to/do/
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<justin_smith>
oh, great, thanks
<justin_smith>
in this case [*:0]const u8 is a better description of the pointer, given the API
<justin_smith>
but that's a good trick for other situations
<andrewrk>
justin_smith, generally, [*c] is only to be used by auto translated code. if you're denoting the type by pressing keys into your keyboard, you should pick the actual memory layout instead of leaving it ambiguous
<justin_smith>
this was the last bug in my verbatim "translate-c" based port of the jack example client (the simple one that copies the microphone data to the speaker), I'm going to see if I can clean it up more, make a blog post, and most likely turn it into a more generic "drop you zig function in here to process audio" example
<justin_smith>
andrewrk: that's a great rule of thumb, thanks, yeah I did start with translate-c, and I'm trying to turn it into better code
<justin_smith>
I'll make a goal of turning every [*c] into something more specific
<ifreund>
I for one love classifying those [*c] pointers
<ifreund>
it's so satisfying to fit them into zig's superior pointer type system
<justin_smith>
ifreund: what's the best guide - the #Pointers secion in the langref, or?
<ifreund>
That's all I've used, it certainly has everything you need
<justin_smith>
frett27: cool, that's new to me thanks
<ifreund>
if you have any specific case where it's unclear to you what the type should be, feel free to ask here of course
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<pixelherodev>
Hmm, here's an idea - for simpler translate-cs, does it make sense to have an interface which asks the user to disambiguate types?
<pixelherodev>
That would be useful for long-term bindings / conversions which aren't intended to be regenerated frequently
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<justin_smith>
pixelherodev: well, it's easy enough to search for every "[*c]" in my file and know they all need fixing
<justin_smith>
pixelherodev: the goal here was twofold, to make a blog post / example of translating a relatively straightforward c lib with a small api surface, and maybe ending up with a reusable binding spot for other code
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<pixelherodev>
justin_smith: yes, but that means one at a time
<pixelherodev>
I meant so it asks for the fundamental type, and then propagates it
<pixelherodev>
Maybe even replaces [*] with []
<justin_smith>
right, but you'd want ? when its 0/1 vs. many
<justin_smith>
and it could be that the same data type in the same api is 0/1 for one call, and many for another
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<justin_smith>
here's a fun example where multiple steps of translation can be elided entirely by using type inferernce and feeding c back what you got in the first place - runtime behavior is the same on each side of this diff http://ix.io/2y3x
<justin_smith>
approach one: fix the alignment of the pointer, fix the type, cast back to what the c lib wants
<justin_smith>
approach two: ignore alignment and type, and feed c the same garbage it fed you
<justin_smith>
I probably will want a helper that takes a []c.jack_default_audio_sample_t and quietly turns it into void to hand it to jack
<justin_smith>
just because c is gigo doesn't mean we need to deal in garbage :D
<ifreund>
why the *% for copy_size there?
<justin_smith>
ifreund: it was done by translate-c, my first guess is overflowing multiplication
<ifreund>
ah, yeah well all unsigned multiplication in C is wrapping
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<justin_smith>
I replaced with * (and removed that @bitCast / @as combo) and the program compiles and behaves as before
<ifreund>
* is what makes sense here yeah
<justin_smith>
ifreund: yeah, sercing in langref.html gives "*% - wrapping multiplication, guaranteed to have two's complement wrapping behavior"
<justin_smith>
so it looks like a corner case c undefined behavior thing
<justin_smith>
I'm developing this by running the program repeatedly, and since it pipes mic to speaker, I rub the laptop mic to test
<ifreund>
yes, *% is the proper translation of * for unsigned ints in C
<justin_smith>
this makes the dogs jealous because I am "petting the laptop"
<ifreund>
hah
<justin_smith>
so petting dogs is now part of my dev iteration lol
<justin_smith>
if only I had a contact mic in a dog brush :D
<gonz_>
We should all have this
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<andrewrk>
lol
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<frett27>
:-
<frett27>
petting dogs checks the unsigned int overflow lol
<frett27>
s/dogs/laptop/
<pixelherodev>
andrewrk: I disable github notifications for the foreseeable future, since I was getting too many of them; mind pinging me in here when 6250 is merged so I don't obsessively check?
<pixelherodev>
The only real concern to me is that I don't know how many people will be motivated to touch that stage1 output from CBE, but that's been a sorta back-of-the-mind concern for a bit now
<pixelherodev>
It does make sense to me that bootstrapping shouldn't be a priority for now
<andrewrk>
I can do that work, I don't mind one-off monotonous code massaging
<andrewrk>
that might be my greatest strength, honestly
<ifreund>
with a good text editor and music it can be fairly pleasant
<pixelherodev>
:P
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