staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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chris-rock

// Part of https://github.com/chris-rock/node-crypto-examples

// Nodejs encryption of buffers
var crypto = require('crypto'),
    algorithm = 'aes-256-ctr',
    password = 'd6F3Efeq';

var fs = require('fs');
var zlib = require('zlib');

ygotthilf

ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
cat jwtRS256.key
cat jwtRS256.key.pub

OlegIlyenko

In this gist I would like to describe an idea for GraphQL subscriptions. It was inspired by conversations about subscriptions in the GraphQL slack channel and different GH issues, like #89 and #411.

Conceptual Model

At the moment GraphQL allows 2 types of queries:

• query
• mutation

Reference implementation also adds the third type: subscription. It does not have any semantics yet, so here I would like to propose one possible semantics interpretation and the reasoning behind it.

btroncone

Comprehensive Introduction to @ngrx/store

By: @BTroncone

Also check out my lesson @ngrx/store in 10 minutes on egghead.io!

Update: Non-middleware examples have been updated to ngrx/store v2. More coming soon!

Table of Contents

wkwiatek

// App
import { Component } from '@angular/core';

@Component({
  selector: 'app',
  template: '<span>{{ sayHello() }}</span>',
})
export class App {
  public name: string = 'John';

arciisine

import { Component, Input, AfterViewInit } from '@angular/core';
import { NgModel, DefaultValueAccessor, NgControl } from '@angular/forms';
import { Http, Headers, RequestOptions } from '@angular/http';

@Component({
  selector: 'app-file-uploader',
  template: '<input type="file" (change)="updated($event);">',
  providers: [NgModel, DefaultValueAccessor]
})
export class FileUploaderComponent implements AfterViewInit {

swaldman

Setting up geth as a service under systemd Fedora 27

Prerequisite: dnf install golang

1. Create user geth with useradd
2. As user geth fast sync the blockchain, geth --fast --cache 1024
3. Manually run geth --rpc as user geth and watch to see that the blockchain continues to sync properly
4. Install the geth.service file (also in this gist) in /usr/lib/systemd/system/
5. Make a symlink from /etc/systemd/system/multi-user.target.wants/geth.service to /usr/lib/systemd/system/geth.service
6. systemctl enable geth followed by systemctl start geth

rhamedy

//you do not necessary need all of the following, i copy/pasted a piece from 
//one of my projects.
var express = require('express');
var fs = require('fs');
var Busboy = require('busboy');
var mime = require('mime');
var https = require('https');
var querystring = require('querystring');

var router = express.Router();

virolea

upload(files) {
  const config = {
    onUploadProgress: function(progressEvent) {
      var percentCompleted = Math.round((progressEvent.loaded * 100) / progressEvent.total)
      console.log(percentCompleted)
    }
  }

  let data = new FormData()
  data.append('file', files[0])