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Details about VAT on KBO:

https://kbopub.economie.fgov.be/kbopub/zoeknaamfonetischform.html

VIES VAT number validation

https://ec.europa.eu/taxation_customs/vies/vatRequest.html

Procedure to change Residence Permit status from employed (Limited) to self employed (Unlimited)

https://dofi.ibz.be/fr/themes/faq/redevance

Office des Etrangers

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public class ReadExcelColumnValues {
    public static void main(String[] args) throws IOException {
        String sheetName = "Sheet2";
        String columnName = "Status";
        String[][] sheetValues = getSheetData(App.class.getProtectionDomain().getCodeSource().getLocation().getPath() + "\\Test-excel.xls", sheetName);
        List<String> columnValues = getColumnValues(getColumnPosition(columnName, sheetValues), sheetValues);
        System.out.println(columnValues);
    }

    private static List<String> getColumnValues(int columnPosition, String[][] sheetValues) {

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public List<Employee> findAllEmployee(int offset, int limit) {
		String employeeQuery = String.format("select distinct r from %s r left join r.owner as u", Employee.class);
		employeeQuery += " WHERE r.status =  :status ORDER BY r.lastModification DESC";
		EntityManagerFactory factory = Persistence.createEntityManagerFactory("employee_ds");
		EntityManager shortLiveEntityManager = factory.createEntityManager();
		TypedQuery<RISIndex> query = shortLiveEntityManager.createQuery(employeeQuery, Employee.class).setFlushMode(FlushModeType.COMMIT);;
		query.setParameter("status", Status.APPROVED);
		query.setHint(QueryHints.QUERY_RESULTS_CACHE, false);
		query.setHint(QueryHints.CACHE_USAGE, CacheUsage.CheckCacheThenDatabase);
		List<RISIndex> resultList = query

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Design Patterns implemented in Java 8

These patterns are implemented using Java 8 Lambdas (together with Project Lombok annotations).

Factory Pattern

Factory I : No Parameter Constructor

Enum class:

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/**
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0

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import { Component, HostListener } from '@angular/core';

@Component({
  selector: 'app-keyboard-listener',
  templateUrl: './keyboard-listener.component.html',
  styleUrls: ['./keyboard-listener.component.css']
})
export class KeyboardListenerComponent {

  // Listener just for one key

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Go

Go is a statically typed, compiled programming language designed at Google. Go is syntactically similar to C, but with memory safety, garbage collection, structural typing, and CSP-style concurrency.

This cheat sheet is prepared by refering the book Introducing Go Build Reliable, Scalable Programs by Caleb Doxsey

Topics

• Single and Multi-line comments
• Basic Data Types
  • Intergers

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Go Notes

CLI

The most important Go CLIs:

Command	Description
go build	Compile packages and dependencies
go fmt	Format package sources

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Go note

my personal go note

• Go note
  • Context
    • Background
    • WithTimeout
    • WithValue
• Other usage

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package main

import (
	"encoding/json"
	"fmt"
)

type example struct {
	Name    string
	Address string