vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

trajakovic

#!/usr/bin/env bash

func_check_for_root() {
        if [ ! $( id -u ) -eq 0 ]; then
            echo "ERROR: $0 Must be run as root, Script terminating" ;exit 7
        fi
    }
func_check_for_root

#SETUP PARAMS

eduardocardoso

var arr = [];
var imgs = document.querySelectorAll('div.mvs a[ajaxify]');
for (var i = 0; i < imgs.length; i++) { arr.push(imgs[i]); } 
var a = document.createElement('a'); 
var re = RegExp("[?&]src=[^&]+")
arr.forEach(function (img) {
 ajaxify = img.getAttribute('ajaxify'); 
 encoded_img_url = re.exec(ajaxify)[0].substr(5);
 decoded_img_url = decodeURIComponent(encoded_img_url);
 a['href'] = decoded_img_url;

lihnux

var url = "Hello World";
var data = [];
for (var i = 0; i < url.length; i++){  
    data.push(url.charCodeAt(i));
}

ngpestelos

May 8, 2018

I wrote this four years ago, so instead use this command:

$ docker rmi $(docker images -q -f dangling=true)

mobilemind

# delete local tag '12345'
git tag -d 12345
# delete remote tag '12345' (eg, GitHub version too)
git push origin :refs/tags/12345
# alternative approach
git push --delete origin tagName
git tag -d tagName