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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

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package demo;

import java.util.concurrent.TimeUnit;

import org.springframework.aop.TargetSource;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.support.DelegatingIntroductionInterceptor;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

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package com.example;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

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    public final class ResultFuture implements Future<Result> {
        private final CountDownLatch latch = new CountDownLatch(1);
        private Result value;

        @Override
        public boolean cancel(boolean mayInterruptIfRunning) {
            return false;
        }

        @Override

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// ....

def compilerConfig = new CompilerConfiguration()
compilerConfig.optimizationOptions.indy = true
 
def shell = new GroovyShell(compilerConfig)

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Squashing Git Commits

The easy and flexible way

This method avoids merge conflicts if you have periodically pulled master into your branch. It also gives you the opportunity to squash into more than 1 commit, or to re-arrange your code into completely different commits (e.g. if you ended up working on three different features but the commits were not consecutive).

Note: You cannot use this method if you intend to open a pull request to merge your feature branch. This method requires committing directly to master.

Switch to the master branch and make sure you are up to date:

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Greach 2018 awesome list

What is this?

A compilation of all the links to slides and repositories used in workshops or shown by the speakers.

Why

It can be difficult to retrieve all that material on twitter after the conference.

Contents

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import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;

public class Hello {
    private static final MethodHandles.Lookup lookup = MethodHandles.lookup();

    public static void main(String[] args) throws Throwable {
        System.out.println("Hello, " + args[0]);
    }

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package indy;

import java.lang.invoke.CallSite;
import java.lang.invoke.ConstantCallSite;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.reflect.Constructor;

import org.objectweb.asm.ClassWriter;

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@Grab(group='org.gperfutils', module='gbench', version='0.4.3-groovy-2.4')

String a = 'The quick brown fox'
String b = 'jumps over the lazy dog'
int x = 1
double y = 2

benchmark {
      'simple concat' {
          String concat = a + ' ' + b + ' ' + x + ' ' + y