mzs's comments

On: Functional ultrasound through the skull

[mzs]

How do you degas a skull in a living mammal and have an unharmed animal after?

[raffihotter → mzs]

You don’t. The bubbles only form once the skull is outside the body. When it gets out of the body, the gaps that used to be filled with water get filled with air.

On: Show HN: A macOS app to prevent sound quality degr...

[mzs]

I just learned about hammerspoon because of this, automate macos with lua, nice: https://github.com/Hammerspoon/hammerspoon

On: The Case of the Missing Increment

[mzs]

You have to use an instruction like cpuid with rdtsc so that the TSC is not read before the loop terminates. There have been changes to the Intel docs and there are more options now:

https://stackoverflow.com/a/58146426

Also in the bad old days SMM would interfere on some CPUs.

On: The best $4 ever spent

[mzs]

experienced the same with train to museum

On: Tcl 9.0

[mzs]

  rm -rf "$TSTDIR"/etc

is pretty dangerous when you forget to set the env var

[sfink → mzs]

Fair! Upvoted.

I guess I'm not likely to type that into the shell, or if I do, I then tab-complete to expand it.

I could definitely see myself using that in a shell script, though. I tend to do validity checks there:

    if ! [ -d "$TSTDIR" ]; echo "$TSTDIR not found, stupid" >&2; exit 1; fi

but that's kind of irrelevant, since if I need it to exist then I won't be removing it. Plus, I could totally see myself doing

    if [ -d "$TESTDIR" ]; then
      rm -rf "$TSTDIR"/etc
    fi

[oneshtein → mzs]

In bash, `set -u` or `"${TSTDIR:?Error: TSTSDIR is required.}/etc"` protects from such errors.

On: Gaining access to anyones Arc browser without them...

[mzs]

Same for me, on FF you can override it with:

  about:config
    ui.prefersReducedMotion = 0

https://developer.mozilla.org/en-US/docs/Web/CSS/@media/pref...

On: Diatom Arrangements

[mzs]

thank you

On: Is Tor still safe to use?

[mzs]

So if there are greater than only 357 people on topics the GP is interested in that's better than 50/50 odds.

On: How Raw sockets behave differently in macOS and Li...

[mzs]

This post links to some good documentation about sniffer related options: https://wiki.wireshark.org/CaptureSetup/Offloading#checksum-...

The sysctls are net.link.generic.system.hwcksum_tx and net.link.generic.system.hwcksum_rx on macos.

On: How Raw sockets behave differently in macOS and Li...

[mzs]

There's no NWProtocolRAW class so no: https://developer.apple.com/documentation/network/building-a...