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const handle = promise => promise
  .then(res => [null, res])
  .catch(err => [err, null]);

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var subset = new[] { 2, 4, 6, 8 };
var superset = new[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };


// (when comparing small sets, consider O(n*m) solution:)
public static bool ContainsAll<T>(this IEnumerable<T> source, IEnumerable<T> values)
{
    bool contained = !subset.Except(superset).Any
    
    return contained;

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using System;
using System.Collections.Generic;

namespace Next.Whs.DDespatch.Framework.Models.Mapping.Custom
{
    public class ExampleImplementationClass
    {
        public ExampleImplementationClass()
        {
            MapperBase<Entity, DTO> userMapper = new UserMapper();

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var idsOnly = new List<int>();
var myList = db.Items.Where(item => idsOnly.Contains(item.ID.Value))
                     .Select(a => a.Title).ToList();

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[TestMethod]
[ExpectedException(typeof(ArgumentException),
    "A userId of null was inappropriately allowed.")]
public void NullUserIdInConstructor()
{
   LogonInfo logonInfo = new LogonInfo(null, "P@ss0word");
}

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[TestMethod]
[ExpectedException(typeof(ArgumentException),
    "A userId of null was inappropriately allowed.")]
public void NullUserIdInConstructor()
{
   LogonInfo logonInfo = new LogonInfo(null, "P@ss0word");
}

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string name = new System.Diagnostics.StackTrace().GetFrame(1).GetMethod().Name;
Console.WriteLine(name);

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<?xml version="1.0" encoding="utf-8"?>
<RunSettings>
  <!-- Configurations that affect the Test Framework -->
  <RunConfiguration>
    <MaxCpuCount>1</MaxCpuCount>
    <!-- Path relative to solution directory -->
    <ResultsDirectory>.\TestResults</ResultsDirectory>

    <!-- x86 or x64 -->
    <!-- You can also change it from menu Test > Test Settings > Default Processor Architecture -->

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string keys = string.Join(",", table.Keys.Cast<object>()
                                         .Select(x => x.ToString())
                                         .ToArray());

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            IMedia content = UmbracoContext.Current.Application.Services.MediaService.GetById(Guid.Parse("bc6de686-25fa-49fa-a46b-a2a19c70bd8b"));