in-async

ECCurve curve = ECCurve.NamedCurves.nistP256;
HashAlgorithmName hashName = HashAlgorithmName.SHA256;

// Generate ECC Key
byte[] x, y, d;
{
    using ECDiffieHellman ecc = ECDiffieHellman.Create();
    //using ECDsa ecc = ECDsa.Create();
    ecc.GenerateKey(curve);
    ECParameters ecParams = ecc.ExportParameters(includePrivateParameters: true);

in-async

#nullable enable

using System;
using Newtonsoft.Json.Linq;

namespace Commons {

    /// <summary>
    /// JSON Merge Patch (RFC 7396) を行うクラス。
    /// <para>see https://tools.ietf.org/html/rfc7396</para>

in-async

namespace Inasync {

    internal struct DirtableValue<T> {
        private T _value;

        public DirtableValue(T initial) : this() {
            _value = initial;
        }

        public T Value {

in-async

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

namespace Commons {

    public static class CsvSerializer {

        public static CsvSerializer<T> Create<T>(IEnumerable<(string name, Func<T, object?> valueSelector)>? columns = null) {

in-async

using System;
using System.Collections.Generic;
using System.IO;
using System.Text;

namespace Commons {

    public class CsvReader : IDisposable {
        private readonly TextReader _reader;
        private readonly List<string> _record = new();

in-async

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Reflection;
using System.Threading;
using System.Threading.Tasks;

namespace Commons {

in-async

using System;
using System.Threading.Tasks;

namespace Inasync {

    public sealed class AsyncDisposable<T> : IAsyncDisposable {
        private readonly Func<ValueTask> _disposeAsync;

        public AsyncDisposable(T value, Func<ValueTask> disposeAsync) {
            Value = value;

in-async

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

namespace Commons {

    /// <summary>
    /// サブスクライブの <c>await</c> とキャンセルが可能な Observable インターフェース。

in-async

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

namespace Inasync {

    public static class TaskHelper {

        public static Task WhenAll(ICollection<Task> source) {

in-async

using System;
using System.Collections.Concurrent;
using System.Linq;
using System.Threading;
using System.Threading.Channels;
using System.Threading.Tasks;
using Amazon.Kinesis;
using Amazon.Kinesis.Model;

namespace KinesisHelpers {