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Martin Kühl mkhl

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@viktorklang
viktorklang / Actor.java
Last active February 13, 2023 12:13
Minimalist Java Actors
/*
Copyright 2012-2021 Viktor Klang
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
@rtomayko
rtomayko / gist:2601550
Created May 5, 2012 10:58
Open beautiful git-scm.com manual pages w/ git help -w
# The new git-scm.com site includes man pages designed for pleasant viewing in a web browser:
#
# http://git-scm.com/docs
#
# The commands below can be used to configure git to open these pages when
# using `git help -w <command>' from the command line. Just enter the config
# commands in your shell to modify your ~/.gitconfig file.
# Create a new browser command and configure help -w to use it.
git config --global browser.gitscm.cmd "/bin/sh -c 'open http://git-scm.com/docs/\$(basename \$1 .html)' --"
@jboner
jboner / latency.txt
Last active June 3, 2024 02:58
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@sos4nt
sos4nt / xterm-256color-italic.terminfo
Created July 27, 2012 12:13
A xterm-256color based TERMINFO that adds the escape sequences for italic
# A xterm-256color based TERMINFO that adds the escape sequences for italic.
#
# Install:
#
# tic xterm-256color-italic.terminfo
#
# Usage:
#
# export TERM=xterm-256color-italic
#
@sseveran
sseveran / gist:3588176
Created September 1, 2012 21:37
Uncaught Exceptions
-- | when no catch frame handles an exception dump core and terminate the process
uncaughtExceptionHandler :: SomeException -> IO ()
{-# NOINLINE uncaughtExceptionHandler #-}
uncaughtExceptionHandler !e = do
syslog Error $ "Unhandled exception: " ++ show e
raiseSignal sigABRT
setDefaultUncaughtExceptionHandler :: IO ()
setDefaultUncaughtExceptionHandler =
setUncaughtExceptionHandler uncaughtExceptionHandler
@paulp
paulp / The Signs of Soundness
Last active June 17, 2021 06:48
The Signs of Soundness
Hello scala, my old friend
I've come to take you home again
Because a feature slowly creeping
left me plagued with doubts and weeping
and the version that was tagged in the repo
just has to go
it lacks the signs of soundness
On sleepless nights I hacked alone
applying ant and other tools of stone
#!/bin/sh
# INSTALL
wget -O- http://hydra.nixos.org/build/4253979/download/1/nix-1.5.1-x86_64-linux.tar.bz2 \
| tar xj -C /
sudo -i nix-finish-install
# DEFAULT PROFILE
ln -sf /nix/var/nix/profiles/default/etc/profile.d/nix.sh \
/etc/profile.d/nix.sh

Make it real

Ideas are cheap. Make a prototype, sketch a CLI session, draw a wireframe. Discuss around concrete examples, not hand-waving abstractions. Don't say you did something, provide a URL that proves it.

Ship it

Nothing is real until it's being used by a real user. This doesn't mean you make a prototype in the morning and blog about it in the evening. It means you find one person you believe your product will help and try to get them to use it.

Do it with style

# bash function
defcomp () {
local name="$1" && shift
local functionName="$( echo "${name}_completion" | tr - _ )"
source <(cat <<EOM
$functionName () {
local cur
_get_comp_words_by_ref -n =: cur
COMPREPLY=( \$(compgen -W "\$( $@ )" -- "\$cur") )
}
@lelandbatey
lelandbatey / whiteboardCleaner.md
Last active June 2, 2024 11:23
Whiteboard Picture Cleaner - Shell one-liner/script to clean up and beautify photos of whiteboards!

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

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