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@isaacs
isaacs / node-and-npm-in-30-seconds.sh
Last active July 21, 2024 01:20
Use one of these techniques to install node and npm without having to sudo. Discussed in more detail at http://joyeur.com/2010/12/10/installing-node-and-npm/ Note: npm >=0.3 is *safer* when using sudo.
echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc
mkdir ~/local
mkdir ~/node-latest-install
cd ~/node-latest-install
curl http://nodejs.org/dist/node-latest.tar.gz | tar xz --strip-components=1
./configure --prefix=~/local
make install # ok, fine, this step probably takes more than 30 seconds...
curl https://www.npmjs.org/install.sh | sh
@jboner
jboner / latency.txt
Last active July 23, 2024 14:12
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
@juandopazo
juandopazo / gist:3174141
Created July 25, 2012 03:03
YUI AMD loader
var YUI_config = {};
(function (YUI, global) {
var modules = {};
var justLoaded = [];
var AMD_prefix = '~AMD~';
function nameFromPath(path) {
var parts = path.split(/\//g).pop().split(/\./g),
ext = parts.pop();
@gacha
gacha / merger.rb
Created August 24, 2012 06:53
Merge rails i18n YAML files
# LOAD RAILS ENV ...
def returning(value)
yield(value)
value
end
def convert_hash_to_ordered_hash_and_sort(object, deep = false)
# from http://seb.box.re/2010/1/15/deep-hash-ordering-with-ruby-1-8/
if object.is_a?(Hash)
@rgreenjr
rgreenjr / postgres_queries_and_commands.sql
Last active July 22, 2024 23:19
Useful PostgreSQL Queries and Commands
-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
FROM pg_stat_activity
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;
-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query
FROM pg_stat_activity
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'
@naoyeye
naoyeye / angular.filters.nl2br.js
Created January 2, 2014 14:36
angular nl2br filter
/*
# Usage in html template:
"xxx | nl2br"
<div ng-bind-html=" YourString | nl2br "></div>
or:
@dmvaldman
dmvaldman / FRPandPhilosophy.md
Last active February 23, 2024 16:24
Descartes, Berkeley and Functional Reactive Programming

Descartes, Berkeley and Functional Reactive Programming

By @dmvaldman

Functional Reactive Programming (FRP) is generating buzz as an alternative to Object Oriented Programming (OOP) for certain use cases. However, an internet search quickly leads a curious and optimistic reader into the rabbit-hole of monads, functors, and other technical jargon. I’ve since emerged from this dark and lonely place with the realization that these words are mere implementation details, and that the core concepts are far more universal. In fact, the groundwork was laid down many centuries before the first computer, and has more to do with interpretations of reality, than structuring programs. Allow me to explain.

There’s an old thought experiment that goes like this:

Tree

@yann2192
yann2192 / hardening_usbarmory.md
Last active November 22, 2023 11:36
Hardening USB Armory

Hardening the USB Armory

As a good crypto nerd, I usually use an entirely encrypted linux FS: / but also /boot using grub LUKS support. It's a good setup but it's not perfect, the BIOS and the bootloader are not protected.

I recently got a USBArmory and I wanted to apply the same (or a better) setup.

I found some useful links but no clear howto. So this is my setup.

@remojansen
remojansen / class_decorator.ts
Last active September 14, 2023 14:54
TypeScript Decorators Examples
function logClass(target: any) {
// save a reference to the original constructor
var original = target;
// a utility function to generate instances of a class
function construct(constructor, args) {
var c : any = function () {
return constructor.apply(this, args);
}