alfasin

Setup Mac OS X

I'm in a hospital in Spain and my MacBook was stolen.

Now I bought a new one and need to configure it. I have an external hard drive that backup everything using Time Machine, but I don't want all the crap I had in the old one.

1. Run Software Update

alfasin

Troubleshooting Production JVMs with jcmd

jcmd is a powerful new tool introduced in Java 7. Along with jstack and jps, it should be in your go-to tool for solving production problems on the JVM. (Come to think of it, with this tool you don't really need jps anymore)

Here's an example session with jcmd:

$ ssh wopr.qa.corp.local
$ jcmd -l
34739 sun.tools.jcmd.JCmd -l

alfasin

#!/bin/bash
git clone https://github.com/hashcat/hashcat.git
mkdir -p hashcat/deps
git clone https://github.com/KhronosGroup/OpenCL-Headers.git hashcat/deps/OpenCL
cd hashcat/ && make
./hashcat --version
./hashcat -b -D 1,2
./example0.sh

alfasin

var uniqueArray = function(arrArg) {
  return arrArg.filter(function(elem, pos,arr) {
    return arr.indexOf(elem) == pos;
  });
};

var uniqEs6 = (arrArg) => {
  return arrArg.filter((elem, pos, arr) => {
    return arr.indexOf(elem) == pos;
  });

alfasin

#
# NB : this is not secure
# from http://code.activestate.com/recipes/266586-simple-xor-keyword-encryption/
# added base64 encoding for simple querystring :)
#

def xor_crypt_string(data, key='awesomepassword', encode=False, decode=False):
    from itertools import izip, cycle
    import base64
    if decode:

alfasin

// http://stackoverflow.com/questions/11616630/json-stringify-avoid-typeerror-converting-circular-structure-to-json/11616993#11616993
var o = {};
o.o = o;

var cache = [];
JSON.stringify(o, function(key, value) {
    if (typeof value === 'object' && value !== null) {
        if (cache.indexOf(value) !== -1) {
            // Circular reference found, discard key
            return;

alfasin

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

alfasin

Complete Courses

• Neil Gresham - Masterclass Part 1: Technique & Training [video]
• Neil Gresham - Masterclass Part 2: Skills & Tactics [video]
• Khan Academy - Human anatomy and physiology: Skeletal system [video]

Body

Warming up

• EpicTV / Louis Parkinson - How To Warm Up For Climbing [video, 2:24]
• Eric Karlsson - My Warm Up Routine [video, 11:45]
• Mani the Monkey - Stretching/Warmup Routine [video, 8:34]