MatMoore

Language fluency

Interactive courses

• Kotlin crash course for programmers
• Kotlin koans

Projects

• Exercism
  • Dominoes
• Bank Account

scottwd9

Building Evolutionary Architectures

Chapter 1 - Software Architecture

Architecture is 'the important stuff, whatever that is' or 'the parts that are hard to change later'. An architect analyzes business, domain, and other requirements to develop solutions that satisfy a list of prioritized architectural characteristics (-ilities). We should consider time and change with respect to architecture, or evolvability.

Software ecosystems are in a state of dynamic equilibrium. New languages, tools, methods constant force new equilibriums to emerge (free OS, linux, + free operations, puppet, led to the shift to containers). The pace of change in technology is constantly and rapidly changing in unexpected ways. We should architect systems knowing the landscape will change. Make ease of change a principal of architecture, remove the 'hard to change' definition of architecture.

An evolutionary architecture supports guided, incremental change across multiple dimensions. Evolvability is a meta characteristic that

SheldonWangRJT

This notes is written by Sheldon. You can find me with #iOSBySheldon in Github, Youtube, Facebook, etc.

Need

Convert .mov/.MP4 to .gif

Reason

As a developer, I feel better to upload a short video when I create the pull request to show other viewers what I did in this PR. I tried .mov format directly got after finishing recording screen using Quicktime, however, gif offers preview in most web pages, and has smaller file size.

This is not limited to developer, anyone has this need can use this method to convert the files.

jahe

/*
JPA (Java Persistence API)

Transaction Management with an Entity-Mananger:
---
entityManager.getTransaction().begin();
entityManager.persist(<some-entity>);
entityManager.getTransaction().commit();
entityManager.clear();

trandaison

Note: This is the guide for v 2.x.

For the v3, please follow this url: https://blog.csdn.net/sam_shan/article/details/80585240 Thanks @liy-cn for contributing.

StarUML

Download: StarUML.io

Crack

Source: jorgeancal

benjamincharity

beforeEach(async(() => {
    TestBed.configureTestingModule({
        imports: [
            MdToolbarModule,
        ],
        providers: [
            {
                provide: Router,
                useClass: MockRouter,
            },

sahilsk

Kafka Cheat Sheet

Display Topic Information

$ kafka-topics.sh --describe --zookeeper localhost:2181 --topic beacon
Topic:beacon	PartitionCount:6	ReplicationFactor:1	Configs:
	Topic: beacon	Partition: 0	Leader: 1	Replicas: 1	Isr: 1
	Topic: beacon	Partition: 1	Leader: 1	Replicas: 1	Isr: 1

Makesh

------------------ Pre Java 8 ---------------------
Map<Employee, File> fileMap = new HashMap<Employee, File>();
int i =0;
for (Map.Entry<Employee, File> entry : map.entrySet()) {
       i++;
       // do something with i
   }

------------------ Java 8 Lambda ---------------------
AtomicInteger counter = new AtomicInteger(0);

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?

pablotdl

'use strict'

/**
 * A sample controller that stores data in the $rootScope
 */
angular.module('sample').controller('usingRootScopeController', ['$rootScope', '$scope', function ($rootScope, $scope) {
  // Resets the list of items.
  $scope.reset = function () {
    $rootScope.someList = [];
  }