joseluisq

/**
 * Return an environment variable typed value from `process.env`.
 * It also supports a default value in case of `undefined`.
 *
 * The function will follow these steps to take a typed value:
 * 1. First it will try to get the env value from `process.env`.
 * 2. Then if `undefined` then it try with the default environment variable value if defined.
 * 3. Otherwise if the default value is `undefined` then it will return the Javascript default values:
 *     - Boolean: `false`
 *     - String: `""`

joseluisq

Achieving warp speed with Rust

Contents:

• Number one optimization tip: don't
• Never optimize blindly
• Don't bother optimizing one-time costs
• Improve your algorithms
• CPU architecture primer
• Keep as much as possible in cache
• Keep as much as possible in registers

joseluisq

# Match on all types of devices but joysticks
#
# If you want to configure your devices, do not copy this file.
# Instead, use a config snippet that contains something like this:
#
# Section "InputClass"
#   Identifier "something or other"
#   MatchDriver "libinput"
#
#   MatchIsTouchpad "on"

joseluisq

enum Token {
    Start,
    Middle,
    End,
}

/// Parses the Nginx-like `try_files` directive string and returns a vector of tokens.
pub fn parse(val: &str) -> Vec<String> {
    let mut kind = Token::Start;
    let mut token = String::new();

joseluisq

/** Representa una respuesta JSON satisfactoria */
interface ResponseOk<T = null> {
    success: true
    data: T
}

/** Representa una respuesta JSON errónea */
interface ResponseFail<T = null> {
    success: false
    code: string|number

joseluisq

/** Generate secure random string values in Javascript using cryto-random bytes */
function randomHash (len) {
    return Array.from(
        window.crypto.getRandomValues(new Uint8Array(Math.ceil(len / 2))),
        (b) => ("0" + (b & 0xFF).toString(16)).slice(-2)
    ).join("")
}

// Simple tests with various lengths

joseluisq

How to resize a qcow2 disk image on Linux

This example takes olddisk.qcow2 and resizes it into newdisk.qcow2, extending one of the guest's partitions to fill the extra space.

1. qcow2 format

1.1. Verify the filesystems of olddisk.qcow2

joseluisq

use futures::StreamExt;
use std::error::Error;
use tokio;
use tokio::macros::support::Pin;
use tokio::prelude::*;
use tokio::time::{Duration, Instant};

pub fn main() -> Result<(), Box<dyn std::error::Error>> {
    let mut multi_threaded_runtime = tokio::runtime::Builder::new()
        .threaded_scheduler()

joseluisq

/**
 * DISCLAIMER:
 * The only intention of this "scraper script" is to serving as a backup tool for YOUR own content on Quora.
 * Which means YOUR PUBLIC/PRIVATE content with YOU as author.
 * So use this script under Quora Policy and Term conditions. https://www.quora.com/about/tos_archive
 **/

/**
 * Dead simple Javascript browser scraper to backing up YOUR Quora content.
 * Feel free to customize it to your needs.

joseluisq

How to save space on disk removing ArchLinux Pacman packages cache

1. Check out how many space is taken by Pacman packages cache

ls /var/cache/pacman/pkg/ | wc -l
# 13886
du -sh /var/cache/pacman/pkg/
# 61G	/var/cache/pacman/pkg/