fntlnz

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

tedmiston

/*
In the node.js intro tutorial (http://nodejs.org/), they show a basic tcp 
server, but for some reason omit a client connecting to it.  I added an 
example at the bottom.

Save the following server in example.js:
*/

var net = require('net');

khaykov

9254835974458887629672873635789957411886024698554157393849494864228024962939550688297074527198420261051675205999609689838587412
7948702662533481896767559573369920938242346354580061545409242090168773727371802699309443935396635866263937828773324526334321892
7929250312741837331511829643632683169694074912332726993582394725302853411901337696207186358524323117172520907433878952968176465
9486937364148093931718552300016332142708943190856638524388888569011747617956915519539025796115901484762122047712200094207683584
0703675740855407318047361595661595146837376373951978537785605481083388906490085533348547865459237835407372374738389274773789264
3524314516560200536698529022539598732463389124803873184044464663165630452635665559603483233341839268186056673186867104904449866
3388466377320953222057779182433549144340237502432464295061371141084500222833875925546082542869030852833895137466510262849050187
2359980877010447170873386178573828860442255448874794721230413368694441497441338856684036949118353204002591974711928301953002372

championswimmer

Templates in C++ vs Generics in Java

Templates and generics allow us to achieve very similar results using very similar code syntax in C++ and Java respectively. But despite that, the implementation of these two features and their semantics are vastly different under the hood.

Syntax and Usage

Templates

Let us consider first the case of a template called Pair in C++.

RobSeder

# ~/.bashrc: executed by bash(1) for non-login shells.
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
# for examples

# If not running interactively, don't do anything
case $- in
    *i*) ;;
      *) return;;
esac

colindean

#!/bin/bash
# 
# This is free and unencumbered software released into the public domain.
#
# Requires bc, dc, openssl, xxd
#
# by grondilu from https://bitcointalk.org/index.php?topic=10970.msg156708#msg156708

base58=({1..9} {A..H} {J..N} {P..Z} {a..k} {m..z})
bitcoinregex="^[$(printf "%s" "${base58[@]}")]{34}$"

justinmeiners

The Skills Poor Programmers Lack

A friend and I had a discussion about the basic skills that are often lacking in experienced programmers. How can a programmer work for ten or twenty years and never learn to write good code? So often they need close supervision to ensure they go down the right path, and they can never be trusted to take technical leadership on larger tasks. It seems they are just good enough to get by in their job, but they never become effective.

We thought about our experiences and came up with three fundamental skills that we find are most often missing. Note that these are not skills which take a considerable amount of talent or unique insight. Nor are they "trends" or "frameworks" to help you get a new job. They are basic fundamentals which are prerequisites to being a successful programmer.

Understand how the language works

Programmers cannot write good code unless they understand what they are typing. At the most basic level, this means they need to understand the rules of

lhorie

So there were a few threads going around recently about a challenge to write the longest sequence of keywords in Javascript:

• https://twitter.com/bterlson/status/1093624668903268352
• https://news.ycombinator.com/item?id=19102367

There are, however, a few problems:

• These solutions use non-keyword tokens (null, true, false are actually Literals, not Keywords)
• One of the solutions isn't quite valid (new super)

jeffmcfadden

class IPCameraView: UIView, NSURLSessionDataDelegate {

    var imageView:UIImageView
    
    var url: NSURL
    var endMarkerData: NSData
    var receivedData: NSMutableData
    var dataTask: NSURLSessionDataTask
    
    init(frame: CGRect) {