JoshuaRLi
Joined 10 years ago
Karma
471
Submissions
107
Member since
Dec 14
Recent submissions
Comment · 5 years ago
Happy to see PEP 582 gaining traction, the last attempt I saw in this space was https://github.com/cs01/pythonloc.
Comment · 6 years ago
> The only thing that matters is wall clock time so if cache layout is making a 300% difference to wall clock, focusing on instructions counts will mislead you on the most impactful optimization to make
Ahh, very well said!
Comment · 6 years ago
It isn't surprising to me that instruction counts as a performance metric would have less variance than wall time. Did you know that the environment size can actually affect wall time?
> We see that something external and orthogonal to the program, i.e., changing the size (in bytes) of an unused environment variable, can dramatically (frequently by about 33% and once by almost 300%) change the performance of our program. This phenomenon occurs because the UNIX environment is loaded into memory before the call stack. Thus, changing the UNIX environment size changes the location of the call stack which in turn affects the alignment of local variables in various hardware structures.
From https://www.inf.usi.ch/faculty/hauswirth/publications/asplos....
Comment · 6 years ago
I suspect it might be something mentioned in https://github.com/masukomi/arc90-readability. I believe it's what powers "readability" view in modern browsers (firefox https://github.com/mozilla/readability, safari).
Comment · 6 years ago
Have a look at https://github.com/zyedidia/micro, which has those keybindings by default. Mouse support too. Completely eliminated the text editing learning curve for me, and years later, I still use it happily.
Edit: Oh, I see it's been recommended in this thread already.
Comment · 6 years ago
Yeah, I was happy to see the switch away from C random/srandom or rand/srand.
Not my area either, but a little surprised why a PCG-family non-CSPRNG algorithm wasn’t used: https://www.pcg-random.org/posts/a-quick-look-at-xoshiro256....
PCG XSL RR 128/64 (MCG) could be used for 64-bit values (albeit with period 2^126 compared to xoroshiro256’s 2^256 − 1) with 128 bits. Half the state size than xoshiro256, and the performance might be comparable (would need benchmarking). LCG version if you want to trade PRNG quality for even more speed.
Comment · 6 years ago
Love how my old Galaxy S6 is stuck on ancient Android 7. And it's the verizon version too, so I can't unlock the bootloader. Perfectly capable device, what a shame.
Switched to iPhone SE a while ago because of this.
Comment · 6 years ago
Comment · 6 years ago
On my work laptop (macOS Catalina), I get a bunch of `in-addr.arpa` - seems to be reverse lookups. Is that the case for you, too?
Comment · 6 years ago
go mod init github.com/your/project
Then, go get -v will download your dependencies to GOPATH, and (re)generate go.mod, go.sum. For info on how to update dependencies, read `go help get`.
When using modules (presence of a valid go.mod file), GOPATH won't be used for resolving imports. So you don't have to actually work in GOPATH anymore, dependencies are just stored there.
Comment · 6 years ago
I switched from pointing various things to cloudflare to simply using NextDNS a while ago, and it's just excellent. The onboarding flow was way faster and easier than I thought it would be (fantastic setup documentation). Configurations are really great for customization at per-device granularity. Extremely slick and fast web UI. Great DNS latency + performance overall.
I was planning on setting up my own recursive resolver one day (tm) but NextDNS really just makes everything so seamless + easy.
Comment · 6 years ago
> Even worse, iOS forces you to use a fake VPN to change DNS servers at all on cellular!
This is a major pain point for me - I'm trying to use both NextDNS and Tailscale on my iPhone SE 2016, and confirmed that they clash with each other. :(
Comment · 6 years ago
Agree with all these points (also an iPhone SE 2016 user). One more point to consider is whether or not the iPhone SE 2016 will continue to get OS updates.