NDiiong

combine(new int[] { 1, 2, 3, 4, 5, 6 }, new List<int>(), 0);

static void combine(int[] a, List<int> outstr, int index)
{
    for (int i = index; i < a.Length; i++)
    {

        int count = 0;
        foreach (var item in outstr)
            count += item;

NDiiong

    public class ConcurrentGateway
    {
        private ConcurrentQueue<Action> _workQueue = new ConcurrentQueue<Action>();
        private  int _writeLock = 0;

        [ThreadStatic]
        private static AutoResetEvent _waitEvent = new AutoResetEvent(false);

        protected static AutoResetEvent GetThreadWaitEvent()
        {

NDiiong

public class AsyncTask : IDisposable
{
	private readonly bool _envDTETask;

	private readonly object _objlock = new object();

	private readonly TaskFunction _taskFunction;

	private readonly Thread _thread;

NDiiong

//https://www.geeksforgeeks.org/wildcard-character-matching/
//https://docs.microsoft.com/en-us/dotnet/api/system.management.automation.wildcardpattern.containswildcardcharacters?view=powershellsdk-7.0.0
public class Wildcard
{
    private readonly string _pattern;

    public Wildcard(string pattern)
    {
        _pattern = pattern;
    }

NDiiong

public static bool ANSI(string filename)
{
    var file_stream = File.OpenRead(filename);
    if (file_stream == null) return false;

    var stream = new BinaryReader(file_stream);
    var file_size = file_stream.Length;
    byte[] buffer = new byte[file_size];
    stream.Read(buffer, 0, (int)file_size);
    stream.Close();

NDiiong

public static class PdfDocument
{
    public static void AddRange(this Document document, IEnumerable<IElement> elements)
    {
        elements.ForEach(f => document.Add(f));
    }

    public static byte[] Concat(IEnumerable<byte[]> documents)
    {
        Guard.NotNullOrZeroLength(documents, nameof(documents));

NDiiong

using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Linq;
using com.centralaz.RoomManagement.Attribute;
using com.centralaz.RoomManagement.Model;
using com.centralaz.RoomManagement.ReportTemplates;
using iTextSharp.text;
using iTextSharp.text.pdf;

NDiiong

-- this script is for SQL Server and Azure SQL
--https://raw.githubusercontent.com/quartznet/quartznet/master/database/tables/tables_sqlServer.sql

USE [enter_db_name_here];
GO

IF OBJECT_ID(N'[dbo].[FK_QRTZ_TRIGGERS_QRTZ_JOB_DETAILS]', N'F') IS NOT NULL
ALTER TABLE [dbo].[QRTZ_TRIGGERS] DROP CONSTRAINT [FK_QRTZ_TRIGGERS_QRTZ_JOB_DETAILS];
GO

NDiiong

public static class CollectionServiceExtension
    {
        public static IServiceCollection Registers<TService>(this IServiceCollection services, ServiceLifetime lifetime, params Assembly[] assemblies)
            where TService : class
        {
            return services.Registers(lifetime, assemblies, typeof(TService));
        }

        public static IServiceCollection Registers(this IServiceCollection services, ServiceLifetime lifetime, Assembly assemblies, params Type[] interfaceTypes)
        {

NDiiong

using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;

namespace DomainServices
{
    public class DataBuilder<TIn, TOut> where TIn : class where TOut : class, new()
    {