Programming Leftovers

posted by Roy Schestowitz on Mar 23, 2024

• Rlang ☛ Mastering Data Segmentation: A Guide to Using the cut() Function in R

  In the realm of data analysis, understanding how to effectively segment your data is paramount.

• GNOME ☛ Christian Hergert: BOLT’ing Libraries

  I did a little experimenting with BOLT today to optimize libraries post-link.

  I’m not an expert on it or anything, but it seems to allow you to reorder functions in your executable/library based on feedback from perf record and some special post-processing. You can merge multiple runs together in case you have different workloads you’d like to optimize for. But in the end, hot functions get placed near each other to reduce instruction cache pressure.

  In all, it says you can expect gains up-to about 7% which fits in line with my experiment. For example, I open gnome-text-editor with a large C file, the overview map enabled, and syntax highlighting on. Then hold down Page Down to the bottom, Page Up to the top, and then Page Down back to the bottom.

• Perl / Raku

  • LWN ☛ Perl 5.39.9 released

    Verson 5.39.9 of the Perl language has been released. Changes this time

    include a new "medium-precedence" logical exclusive-or operator, a number

    of updated modules, and more; see this

    page for details.

• Shell/Bash/Zsh/Ksh

  • The secret weapon of Bash power users

    IFor vi enthusiasts, the familiar keystrokes can now extend to the Bash shell. Navigate your command history, edit lines with ease, and leverage the power of vi without leaving your terminal. This guide explores the benefits and simple setup process for enabling vi mode in Bash.