otf

-- disable referential integrity
EXEC sp_MSForEachTable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL' 
GO 

EXEC sp_MSForEachTable 'TRUNCATE TABLE ?' 
GO 

-- enable referential integrity again 
EXEC sp_MSForEachTable 'ALTER TABLE ? CHECK CONSTRAINT ALL' 
GO

otf

Expression.Lambda<Func<object>>(Expression.Convert(Expression.Default(t),typeof (object))).Compile()() == null

otf

Debug時

{IL_0000: nop}
{IL_0001: ldarg.0}
{IL_0002: call System.String get_FirstName()}
{IL_0007: brfalse.s IL_0011}
{IL_0009: ldarg.0}
{IL_000a: call Boolean get_IsActive()}
{IL_000f: br.s IL_0012}
{IL_0011: ldc.i4.0}

otf

        Instruction ConditionalBranch(Instruction instruction, Func<Expression, BinaryExpression> condition)
        {
            var val1 = stack.Pop();
            var test = condition(val1);

            var left = (Instruction)instruction.Operand;
            var right = instruction.Next;

            Instruction common = GetJoinPoint(left, right);

otf

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;

namespace Option2
{
    public class Placeholder
    {

otf

public static int[] QuickSort(int[] arr)
{
  if (!arr.Any()) return new int[] { };

  var p = arr.First();
  var xs = arr.Skip(1);

  var lesser = xs.Where(x => x < p).ToArray();
  var greater = xs.Where(x => x >= p).ToArray();
  return (QuickSort(lesser).Concat(new[] { p }).Concat(QuickSort(greater))).ToArray();

otf

using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using LangExt;

namespace LangExt.Guard
{
    public static class Control
    {