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[[!meta title="Optimizing Emacs Lisp Code"]]
[[!meta copyright="Copyright © 2021 Dmitry Gutov"]]
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# Optimizing Emacs Lisp Code
Dmitry Gutov
Live Q&A: <https://bbb.emacsverse.org/b/ban-wg3-zrc-lve>
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[[!table header="no" class="speaker-details" data="""
Name pronunciation: | d-MEET-ri GOO-tov
Pronouns: | he/his
Homepage: | <https://github.com/dgutov/>
Preferred contact info | <dgutov@yandex.ru>
"""]]
- 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.
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