path: root/2021/talks/faster.md

[[!meta title="How to write faster Emacs Lisp"]]
[[!meta copyright="Copyright © 2021 Dmitry Gutov"]]
[[!inline pages="internal(2021/info/faster-nav)" raw="yes"]]

<!-- You can manually edit this file to update the abstract, add links, etc. --->


# How to write faster Emacs Lisp
Dmitry Gutov

[[!inline pages="internal(2021/info/faster-schedule)" raw="yes"]]

-   Before optimizing, benchmark first.
-   Different benchmarking approaches.
-   Live evaluation, step-debugging, measuring from a debugger breakpoint.
-   How to determine if a function is expensive. How to pick one from
    competing alternatives (cl-lib, seq, dash, lean core).
-   Print-benchmarking.
-   Byte-compiled code can give a very different picture, changing where
    the bottleneck is. How to quickly load a byte-compiled version.
-   Steps taken to speed up the Xref package recently.


[[!inline pages="internal(2021/info/faster-nav)" raw="yes"]]