twiecki

rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

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Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

jFransham

Achieving warp speed with Rust

Contents:

• Number one optimization tip: don't
• Never optimize blindly
• Don't bother optimizing one-time costs
• Improve your algorithms
• CPU architecture primer
• Keep as much as possible in cache
• Keep as much as possible in registers

llllllllll

from itertools import chain, repeat
import sys
import types

# byte offsets for structures
if hasattr(sys, 'gettotalrefcount'):
    # under PyDEBUG builds
    _f_localsplus_offset = 392
    _ob_item_offset = 40
else:

andyrbell

# use ImageMagick convert
# the order is important. the density argument applies to input.pdf and resize and rotate to output.pdf
convert -density 90 input.pdf -rotate 0.5 -attenuate 0.2 +noise Multiplicative -colorspace Gray output.pdf

tjelen

Zerotier Ubuntu config notes

Setting up the default gateway (for VPN tunelling)

Ubuntu 18.04 UFW settings, based on [1] Step 1

• ens3 .. primary physical ETH interface
• 10.243.0.0/16 .. ZT network