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Philipp Tessenow tessi

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View byte_array.rb
class ByteArray
include Enumerable
def initialize(n)
@size = n
@char_count = (n / 8.0).ceil
@store = String.new("\0" * @char_count, encoding: "ASCII-8BIT")
end
def [](n)
View keybase.md

Keybase proof

I hereby claim:

  • I am tessi on github.
  • I am tessi (https://keybase.io/tessi) on keybase.
  • I have a public key ASCnhquaMtRQU8NfCVTGIGGkMe3JQBNsbSU26FjGtgJXlQo

To claim this, I am signing this object:

@tessi
tessi / my-way-to-postgresql-9-6-2-on-an-uberspace.md
Last active Nov 27, 2018
Upgrade Postgresql from 9.2 to 9.6 on an uberspace
View my-way-to-postgresql-9-6-2-on-an-uberspace.md

Upgrade Postgresql from 9.2 to 9.6 on an uberspace

Uberspace (an awesome german web hoster) has superb postgresql support, except that it currently only offers postgresql versions 9.2.x and 9.3.x. I run postgresql 9.6.2 on my uberspace and documented steps for a migration to postgresql 9.6 here.

My goal was to be as close to the original uberspace-postgresql-setup as possible, but I had to copy and modify some uberspace scripts so they correctly use the new postgresql version.

Warning: Here be dragons. This is what I did -- that doesn't mean you should do the same or what I did was clever. Always backup your data and maybe test on a throw-away uberspace first. If you find things to improve, let me know and I'll try to keep this updated.

What I assume you have

@tessi
tessi / op_install.sh
Last active Feb 17, 2018
NOT MAINTAINED: OpenProject Install Script for a fresh uberspace
View op_install.sh
#!/bin/sh
set -e
echo "this script installs openproject"
echo "things might take a while, please be patient"
echo ""
echo "setup environment..."
echo "gem: --user-install --no-rdoc --no-ri" > ~/.gemrc
@tessi
tessi / installation.md
Last active Jul 30, 2020
Install OpenProject on uberspace.de
View installation.md

How to install OpenProject on uberspace.de

Follow those steps to install OpenProject on a fresh uberspace.

Step 1: Install dependencies

First we set-up all dependencies. We use ruby 2.1.2 and install gems in a user directory:

echo "gem: --user-install --no-rdoc --no-ri" > ~/.gemrc
cat <<'__EOF__' >> ~/.bash_profile
@tessi
tessi / keybase.md
Last active Aug 29, 2015
keybase.md
View keybase.md

Keybase proof

I hereby claim:

  • I am tessi on github.
  • I am tessi (https://keybase.io/tessi) on keybase.
  • I have a public key whose fingerprint is A948 40E0 C745 A694 C9F2 C221 E01F 12D7 8B9B 048D

To claim this, I am signing this object:

View some latex keybindings in sublime text.md

Jumping, Finding, ...

Keybinding - Description
Ctrl-1 - Move to 1st tab (work every number)
Ctrl-p - Go to anything
Ctrl-g - Go to line
Ctrl-r - Go to symbol (e.g. section and labels)
Ctrl-m - Move to bracket
View hg aliases
[alias]
lg = log -G --pager always --color always --template '\033[0;31m{node|short} \033[0;34m({author|person}) - \033[0;33m{tags} {bookmarks} {branches} \033[0m{desc|firstline|strip} \033[0;32m({date|age})\033[0m\n'
show = log -pr
chp = graft
shortlog = !hg log --template "{author|person}\n" | sort | uniq -c | sort -nr
View benchmark.rb
require 'benchmark'
iterations = 10_000
arr = Array.new(1000) { Array.new(2) << (rand()*100).to_s}
def use_map_join(arr)
arr.map {|a| a[2]}.join ', '
end
def use_inject(arr)
join_str = ', '
View bench
ruby --version
ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-linux]
ruby bench.rb
user system total real
babai1 1.700000 0.000000 1.700000 ( 1.707292)
babai2 29.630000 0.010000 29.640000 ( 29.769966)
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