in-async

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

namespace Commons {

    public class UriTemplate1 {

        public static void Expand(TextWriter writer, string template, IDictionary<string, object?> parameters) {

in-async

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Globalization;
using System.Reflection;

namespace Inasync {

    //[TypeDescriptionProvider(typeof(OptionalTypeDescriptionProvider))]
    [TypeConverter(typeof(OptionalTypeConverter))]

in-async

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
    <LangVersion>9.0</LangVersion>
    <Nullable>enable</Nullable>
    <IsRoslynComponent>true</IsRoslynComponent>
  </PropertyGroup>

  <ItemGroup>

in-async

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
    <LangVersion>9.0</LangVersion>
    <Nullable>enable</Nullable>
    <IsRoslynComponent>true</IsRoslynComponent>
  </PropertyGroup>

  <ItemGroup>

in-async

using System;

namespace Commons {

    /// <remarks>
    /// cf. Proposal: Expression blocks https://github.com/dotnet/csharplang/issues/3086
    /// cf. Proposal: Sequence Expressions https://github.com/dotnet/csharplang/issues/377
    /// </remarks>
    public static class ExpressionFunc {

in-async

using System;
using System.Collections.Generic;

namespace Commons {

    public static class EnumerableExtensions {

        public static IEnumerable<T> WithDisposable<T>(this IEnumerable<T> source, IDisposable disposable) {
            try {
                foreach (T item in source) {

in-async

/// Usage
void Main() {
    var weights = new decimal[] { 4, 6, 7.3m };
    
    Prorate(total: 1014, weights: weights, ProrationRounding.SpecifiedOrder).Dump(nameof(ProrationRounding.SpecifiedOrder));
    Prorate(total: 1014, weights: weights, ProrationRounding.DecimalPartDescending).Dump(nameof(ProrationRounding.DecimalPartDescending));
    ProrateExact(total: 1014, weights: weights).Dump(nameof(ProrateExact));
}

/// <summary>

in-async

#nullable enable

using System;
using System.Collections.Generic;

namespace Commons {

    public delegate bool StringSplitPredicate(ref int index);

    public static class StringExtensions {

in-async

#nullable enable

using System;
using System.Collections.Generic;

namespace Commons {

    /// <summary>
    /// 自然順ソート (Natural sort order) を行う <see cref="IComparer{T}"/> の実装。
    /// cf. https://ja.wikipedia.org/wiki/%E8%87%AA%E7%84%B6%E9%A0%86

in-async

#nullable enable

using System;
using System.Collections.Generic;

namespace Commons {

    /// <summary>
    /// シーケンスの比較を行う <see cref="IComparer{T}"/> 実装。
    /// </summary>