Ivanca

// ==UserScript==
// @name         Rewind Commands For Ultimate-guitar Web Player
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Use Enter Key to Rewind, twice for current section, great to use with a USB Pedal
// @author       Ivan Castellanos
// @match        https://tabs.ultimate-guitar.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=ultimate-guitar.com
// @grant        none
// ==/UserScript==

Ivanca

-- Name: auth_group; Type: TABLE; Schema: public; Owner: postgres
--

CREATE TABLE auth_group (
    id integer NOT NULL,
    name character varying(80) NOT NULL
);

Ivanca

# put it on .bashrc (or .zshrc for zsh)
# comand "make setup" to do make dev.clone && make dev.checkout && make dev.provision && make dev.up
# optional parameter for devstack git repo to clone
make() {
    if [[ $@ =~ ^setup.* ]]; then
    	sh -ec '
    	if [ "$2" != "" ]; then
    		git clone $2
    		cd devstack
    	fi

Ivanca

import scrapy


class BrickSetSpider(scrapy.Spider):
    name = 'brick_spider'
    start_urls = ['http://brickset.com/sets/year-2018']

    def parse(self, response):
        SET_SELECTOR = '.set'
        for brickset in response.css(SET_SELECTOR):

Ivanca

def hanoi(n, source, helper, target):
    print "hanoi( ", n, source, helper, target, " called"
    if n > 0:
        # move tower of size n - 1 to helper:
        hanoi(n - 1, source, target, helper)
        # move disk from source peg to target peg
        if source[0]:
            disk = source[0].pop()
            print "moving " + str(disk) + " from " + source[1] + " to " + target[1]
            target[0].append(disk)

Ivanca

# Each-prior
#####################################################################
# in Q >>>
types: type'[(1;2h;3.2)]
# returns the type of each element (-7 -5 -9h)
# in PYTHON >>>
numbers = [1, 2, 3.2]
types = list(map(type, numbers))

Ivanca

#!/bin/bash

# Stop it all
sudo service httpd stop
sudo service php-fpm stop

# Remove problematic packages
sudo yum remove -y httpd httpd-tools apr apr-util

# Remove old php and php extensions

Ivanca

(function ajaxLoadNextPage () {
    var more = document.querySelector('.comment-tree > tbody > tr:last-child a');
    if (more && more.innerHTML === "More") {    
        var httpRequest = new XMLHttpRequest();
        httpRequest.onreadystatechange = function () {
            if (httpRequest.readyState === XMLHttpRequest.DONE) {
                if (httpRequest.status === 200) {
                  more.remove();
                  var div = document.createElement('div');
                  div.innerHTML = httpRequest.responseText;

Ivanca

// Flattens an array, e.g. [[1,2,[[[3]]]],4] => [1, 2, 3, 4]
var flattenArray = (array) => {
    let initialValue = [];
    return array.reduce((result, ele) => {
        if (Array.isArray(ele)) {
           let flat = flattenArray(ele);
           return result.concat(flat);
        } else {
           result.push(ele);
           return result;

Ivanca

function sortByFrequency(array) {
    var frequency = {};

    array.forEach(function(value) { frequency[value] = 0; });

    var uniques = array.filter(function(value) {
        return ++frequency[value] == 1;
    });
    return uniques.sort(function(a, b) {
        return frequency[b] - frequency[a];