customcommander

Spread vs assign

Abstract

In this article I compare the performance of the spread operator ... and the performance of the assignement operator = in the context of data transformation.

I show that using the spread operator isn't a trivial choice to make and I suggest that immutability and mutation don't have to be mutually exclusive. I also show how one-liner functions can be enriched with the comma operator ,.

What are we measuring?

rbreaves

# Single Command, runs 2 calls to gdbus to get the currently active Window from Gnome 3.x
# Escaped so you can copy and paste into terminal directly
gdbus call -e -d org.gnome.Shell -o /org/gnome/Shell -m org.gnome.Shell.Eval global.get_window_actors\(\)[`gdbus call -e -d org.gnome.Shell -o /org/gnome/Shell -m org.gnome.Shell.Eval global.get_window_actors\(\).findIndex\(a\=\>a.meta_window.has_focus\(\)===true\) | cut -d"'" -f 2`].get_meta_window\(\).get_wm_class\(\) | cut -d'"' -f 2

# Unescaped version, will not run
# Broken down into 2 commands.

# Call to Gnome to get the array location of the active Application
gdbus call -e -d org.gnome.Shell -o /org/gnome/Shell -m \

akhenakh

job "mapd" {
  datacenters = ["dc1"]
  type = "service"
  constraint {
    operator  = "distinct_hosts"
    value     = "true"
  }
  update {
    max_parallel = 1
    min_healthy_time = "10s"

GiacomoP

(function(e) {
    function t(t) {
        for (var n, s, r = t[0], l = t[1], d = t[2], c = 0, m = []; c < r.length; c++) s = r[c], a[s] && m.push(a[s][0]), a[s] = 0;
        for (n in l) Object.prototype.hasOwnProperty.call(l, n) && (e[n] = l[n]);
        u && u(t);
        while (m.length) m.shift()();
        return o.push.apply(o, d || []), i()
    }

    function i() {

borekb

How to link to headings in GitHub issues and pull requests

If you have an issue comment / PR description on GitHub, it doesn't automatically get anchors / IDs that you could link to:

What I like to do is to add a visible # character like this:

elemongw

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
Collect all forks of a github project and return the most recently pushed.
Any alternatives I could find searched only the most recent forks of a project,
which does not return accurate results for projects with many forks.

Note that the GitHub API has a rate limit of 60 requests per hour for unauthenticated requests.
You can create a personal access token in order to circumvent this, which will raise the limit

a-r-m-i-n

Easy Admin Bundle ConfigPass

This document describes the process of Symfony's Easy Admin Bundle, to process the given YAML configuration, with registered ConfigPass classes.

The problem

Those ConfigPasses are collections of private methods, which have e.g. action names hardcoded, so you can't reuse the "config auto-magic" for your new actions.

dimabory

General Responsibility Assignment Software Patterns

http://www.it.uu.se/edu/course/homepage/asd/ht14/Lecture%204.pdf
https://web.cs.dal.ca/~jin/3132/lectures/dp-13.pdf
https://www.cs.cmu.edu/~aldrich/214/slides/design-grasp.pdf
https://dzone.com/articles/solid-grasp-and-other-basic-principles-of-object-o

A collection of patterns/principles for achieving good design – patterns of assigning responsibility. Refer to software objects not domain objects.

anwas

## Add repository
### https://launchpad.net/%7Eondrej/+archive/ubuntu/php
### https://launchpad.net/~ondrej/+archive/ubuntu/apache2
sudo add-apt-repository ppa:ondrej/php
sudo add-apt-repository ppa:ondrej/apache2
sudo apt-get update
sudo apt-get dist-upgrade

DominicBreuker

iptables cheat sheet

Concepts

iptables defines tables, which group features:

• filter: use it to filter traffic
• nat: use it to implement NAT
• raw: use it to define which connections iptables should track (stateful firewall)
• mangle: use it to change some fields in packets (e.g., TTL)
• security: use it to define access control