andreyv

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geçen yıldiscuss

Autoconf can use cache files [1], which can greatly speed up repeated configures. With cache, a test is run at most once.

[1] https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/a...

andreyv

geçen yıldiscuss

Here is a non-zero null pointer: https://gcc.godbolt.org/z/Po5r5Pa36

andreyv

2 yıl öncediscuss

It creates a compound literal [1] of type array of int, and initializes the specified array positions using designated initializers [2] with the results of calls to puts().

Using designated initializers without the = symbol is an obsolete extension.

[1] https://gcc.gnu.org/onlinedocs/gcc/Compound-Literals.html [2] https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html

andreyv

2 yıl öncediscuss

Even the original version 1507 is still supported on the LTSC channel. Support for UTF-8 manifest was added only in version 1903.

andreyv

2 yıl öncediscuss

Old does not mean bad. Even a decade later Wayland struggles to provide basic features that were built in the X protocol.

andreyv

3 yıl öncediscuss

The number of registers available to the program is fixed in the instruction set. The program cannot address more registers without recompiling it to an extended instruction set.

andreyv

3 yıl öncediscuss

First person shooters. Vertical synchronization causes a noticeable output delay.

For example, with a 60 Hz display and vsync, game actions might be shown up to 16 ms later than without vsync, which is ages in FPS.

andreyv

3 yıl öncediscuss

The Soviet Union briefly tried 5 and 6 day weeks in the 1930s: https://en.wikipedia.org/wiki/Soviet_calendar

andreyv

3 yıl öncediscuss

You can use systemd-cron [1] to run traditional cron jobs with systemd. No need for a separate daemon anymore.

[1] https://github.com/systemd-cron/systemd-cron

andreyv

3 yıl öncediscuss

Instead of "/usr/bin/time" you can also write "command time".

andreyv

3 yıl öncediscuss

1% is still a lot for power saving. If the system is idle, it should be at 0%. If it is anything above, then it shows poor design.

andreyv

4 yıl öncediscuss

See: https://en.wikipedia.org/wiki/Lagrange_polynomial

andreyv

4 yıl öncediscuss

Right — ferror() does not set errno, and so perror() is not appropriate here. fprintf(stderr, ...) would be better.

andreyv

4 yıl öncediscuss

In C, and many other languages, the file stream error state is saved after each operation, so you can skip error checking on every output line and only do

  if (fflush(stdout) != 0 || ferror(stdout) != 0)
  {
    perror("stdout");
    return EXIT_FAILURE;
  }

at the end of the program. The same should be done for stderr as well.

In GNU programs you can use atexit(close_stdout) to do this automatically.

andreyv

4 yıl öncediscuss

Perhaps this: https://docs.microsoft.com/en-us/windows-hardware/design/dev...

> On occasion, the system stays in the active mode (with the screen off) for a longer interval of time. These longer active intervals occur for a variety of reasons, for example, processing incoming email or downloading critical Windows updates.

andreyv

5 yıl öncediscuss

> So there is no way to abort a bash script if something like <(sort nonexistent) fails.

The process ID of the last executed background command in Bash is available as $!.

  cat <(sort nonexistent)
  wait $! || echo fail

gives

  sort: cannot read: nonexistent: No such file or directory
  fail

andreyv

5 yıl öncediscuss

Dell also removed trackpoint and all touchpad buttons, and made up/down arrow keys half height on the new Latitude laptops.

These are not the changes one would expect to see in a professional-grade laptop. On the other hand, the Lenovo line looks good in this regard.

andreyv

5 yıl öncediscuss

Autoconf can use a cache file to speed up tests: https://www.gnu.org/software/autoconf/manual/autoconf-2.60/h...

andreyv

6 yıl öncediscuss

In fast-paced games it is essential to disable vertical synchronization as well, trading possible tearing for less input lag.

Does Wayland support this?

Submissions

CVE-2024-6409: OpenSSH: Possible remote code execution in privsep child

C++ iostreams: Unexpected but legal multithreaded behaviour

Arch Linux phasing out i686 support

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