pulumi/sdk/dotnet/Pulumi/Extensions.cs

// Copyright 2016-2019, Pulumi Corporation

using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Threading;
using System.Threading.Tasks;

namespace Pulumi
{
    internal static class Extensions
    {
        public static bool AddRange<T>(this HashSet<T> to, IEnumerable<T> values)
        {
            var result = false;
            foreach (var value in values)
            {
                result |= to.Add(value);
            }

            return result;
        }

        public static void Deconstruct<TKey, TValue>(this KeyValuePair<TKey, TValue> pair, out TKey key, out TValue value)
        {
            key = pair.Key;
            value = pair.Value;
        }

        public static Output<object?> ToObjectOutput(this object? obj)
        {
            var output = obj is IInput input ? input.ToOutput() : obj as IOutput;
            return output != null
                ? new Output<object?>(output.GetDataAsync())
                : Output.Create(obj);
        }

        public static ImmutableArray<TResult> SelectAsArray<TItem, TResult>(this ImmutableArray<TItem> items, Func<TItem, TResult> map)
            => ImmutableArray.CreateRange(items, map);
    }
}