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Erki Esken erkiesken

  • @StarshipRobots
  • Tallinn, Estonia
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@bishboria
bishboria / springer-free-maths-books.md
Last active March 24, 2025 13:36
Springer made a bunch of books available for free, these were the direct links
@jimstudt
jimstudt / UIColor-colorWithKelvin.swift
Created November 15, 2015 20:47
An iOS extension to UIColor to get a white point corresponding to a temperature.
extension UIColor {
// based on http://www.zombieprototypes.com/?p=210 who looked at some data and did a bunch of curve fitting
static func colorWithKelvin( kelvin: CGFloat) -> UIColor {
let k = kelvin < 1000 ? 1000 : ( kelvin > 40000 ? 40000 : kelvin)
func interpolate( value: CGFloat, a: CGFloat, b:CGFloat, c:CGFloat) -> CGFloat {
return a + b*value + c*log(value)
}
sysctl -w fs.file-max=12000500
sysctl -w fs.nr_open=20000500
ulimit -n 4000000
sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000'
sysctl -w net.ipv4.tcp_rmem='1024 4096 16384'
sysctl -w net.ipv4.tcp_wmem='1024 4096 16384'
sysctl -w net.core.rmem_max=16384
sysctl -w net.core.wmem_max=16384
wget http://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb
sudo dpkg -i erlang-solutions_1.0_all.deb
@duggan
duggan / inventory.py
Created October 12, 2015 15:01
Present Terraform tfstate data as an Ansible inventory
#!/usr/bin/env python
import sys
import os
import json
import argparse
import collections
__description__ = """Ansible Dynamic Inventory for Terraform."""
__epilog__ = """
@paulirish
paulirish / what-forces-layout.md
Last active May 7, 2025 22:50
What forces layout/reflow. The comprehensive list.

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics
  • elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
@ddragosd
ddragosd / api-gateway-marathon-setup.sh
Last active April 9, 2018 04:31
API Gateway setup in Mesos and Marathon
# PREREQUISITES:
# Setup a Mesos cluster and install Marathon framework
MARATHON_HOST="http://<marathon_host>/marathon"
# this could be an internal ELB that the Gateway nodes can use to auto-discover services
INTERNAL_MARATHON_HOST="http://<internal_marathon_host>/marathon"
# a wildcard domain configured with *.api.anydomain
API_DOMAIN="api.<my-domain>"
# -------------------------
@alexedwards
alexedwards / gist:dc3145c8e2e6d2fd6cd9
Last active May 6, 2025 13:58
Example of working with Go's database/sql and NULL fields
CREATE TABLE books (
isbn char(14) NOT NULL,
title varchar(255),
author varchar(255),
price decimal(5,2)
);
INSERT INTO books (isbn, title, author, price) VALUES
('978-1503261969', 'Emma', 'Jayne Austen', 9.44),
('978-1514274873', 'Journal of a Soldier', NULL, 5.49),
@xrl
xrl / heka_build.chef.rb
Last active August 29, 2015 14:22
How I build a heka deb with my custom plugin
user = "xavierlange"
heka_dir = "#{Chef::Config[:file_cache_path]}/heka"
%w(cmake mercurial fakeroot debhelper libgeoip-dev).each do |pkg|
package pkg
end
directory heka_dir do
owner user
group user
@rmoriz
rmoriz / howto.md
Last active April 14, 2023 20:30
Build an OSX 10.10 base-box for test-kitchen and VirtualBox
@krigar
krigar / ansible.cfg
Last active February 28, 2023 20:46
Bastion Playbook
[ssh_connection]
ssh_args = -F ssh.cfg
control_path = ~/.ssh/mux-%r@%h:%p