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Add Action, Function and EventHandler (#116)
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| Original file line number | Diff line number | Diff line change |
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| <Project> | ||
| <ItemGroup> | ||
| <SourceRoot Include="$(MSBuildThisFileDirectory)/"/> | ||
| </ItemGroup> | ||
| </Project> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| <Project> | ||
| <ItemGroup> | ||
| <SourceRoot Include="$(MSBuildThisFileDirectory)/"/> | ||
| </ItemGroup> | ||
| </Project> |
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| // | ||
| // Copyright (c) .NET Foundation and Contributors | ||
| // Portions Copyright (c) Microsoft Corporation. All rights reserved. | ||
| // See LICENSE file in the project root for full license information. | ||
| // | ||
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| namespace System | ||
| { | ||
| using System.Runtime.CompilerServices; | ||
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| /// <summary> | ||
| /// Encapsulates a method that has no parameters and does not return a value. | ||
| /// </summary> | ||
| public delegate void Action(); | ||
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| /// <summary> | ||
| /// Encapsulates a method that has a single parameter and does not return a value. | ||
| /// </summary> | ||
| /// <typeparam name="T">The type of the parameter of the method that this delegate encapsulates. | ||
| /// This type parameter is covariant.That is, you can use either the type you specified or any type that is more derived.For more information about covariance and contravariance, see <see href="https://docs.microsoft.com/en-us/dotnet/standard/generics/covariance-and-contravariance">Covariance and Contravariance in Generics</see>.</typeparam> | ||
| /// <param name="obj">The parameter of the method that this delegate encapsulates.</param> | ||
| public delegate void Action<in T>(T obj); | ||
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| /// <summary> | ||
| /// Encapsulates a method that has a single parameter and does not return a value. | ||
| /// </summary> | ||
| /// <typeparam name="T1">The type of the first parameter of the method that this delegate encapsulates. | ||
| /// This type parameter is covariant.That is, you can use either the type you specified or any type that is more derived.For more information about covariance and contravariance, see <see href="https://docs.microsoft.com/en-us/dotnet/standard/generics/covariance-and-contravariance">Covariance and Contravariance in Generics</see>.</typeparam> | ||
| /// <typeparam name="T2">The type of the second parameter of the method that this delegate encapsulates. | ||
| /// This type parameter is covariant.That is, you can use either the type you specified or any type that is more derived.For more information about covariance and contravariance, see <see href="https://docs.microsoft.com/en-us/dotnet/standard/generics/covariance-and-contravariance">Covariance and Contravariance in Generics</see>.</typeparam> | ||
| /// <param name="arg1">The first parameter of the method that this delegate encapsulates.</param> | ||
| /// <param name="arg2">The second parameter of the method that this delegate encapsulates.</param> | ||
| public delegate void Action<in T1, in T2>(T1 arg1, T2 arg2); | ||
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| /// <summary> | ||
| /// Encapsulates a method that has no parameters and returns a value of the type specified by the <typeparamref name="TResult"/> parameter. | ||
| /// </summary> | ||
| /// <typeparam name="TResult">The type of the return value of the method that this delegate encapsulates. | ||
| /// This type parameter is covariant.That is, you can use either the type you specified or any type that is more derived.For more information about covariance and contravariance, see <see href="https://docs.microsoft.com/en-us/dotnet/standard/generics/covariance-and-contravariance">Covariance and Contravariance in Generics</see>.</typeparam> | ||
| /// <returns>The return value of the method that this delegate encapsulates.</returns> | ||
| public delegate TResult Func<out TResult>(); | ||
|
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| /// <summary> | ||
| /// Encapsulates a method that has one parameter and returns a value of the type specified by the <typeparamref name="TResult"/> parameter. | ||
| /// </summary> | ||
| /// <typeparam name="T">The type of the parameter of the method that this delegate encapsulates. | ||
| /// This type parameter is covariant.That is, you can use either the type you specified or any type that is more derived.For more information about covariance and contravariance, see <see href="https://docs.microsoft.com/en-us/dotnet/standard/generics/covariance-and-contravariance">Covariance and Contravariance in Generics</see>.</typeparam> | ||
| /// <typeparam name="TResult">The type of the return value of the method that this delegate encapsulates. | ||
| /// This type parameter is covariant.That is, you can use either the type you specified or any type that is more derived.For more information about covariance and contravariance, see <see href="https://docs.microsoft.com/en-us/dotnet/standard/generics/covariance-and-contravariance">Covariance and Contravariance in Generics</see>.</typeparam> | ||
| /// <param name="arg">The parameter of the method that this delegate encapsulates.</param> | ||
| /// <returns>The return value of the method that this delegate encapsulates.</returns> | ||
| public delegate TResult Func<in T, out TResult>(T arg); | ||
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| /// <summary> | ||
| /// Encapsulates a method that has one parameter and returns a value of the type specified by the <typeparamref name="TResult"/> parameter. | ||
| /// </summary> | ||
| /// <typeparam name="T1">The type of the parameter of the method that this delegate encapsulates.</typeparam> | ||
| /// <typeparam name="T2">The type of the parameter of the method that this delegate encapsulates.</typeparam> | ||
| /// <typeparam name="TResult">The type of the return value of the method that this delegate encapsulates. | ||
| /// This type parameter is covariant.That is, you can use either the type you specified or any type that is more derived.For more information about covariance and contravariance, see <see href="https://docs.microsoft.com/en-us/dotnet/standard/generics/covariance-and-contravariance">Covariance and Contravariance in Generics</see>.</typeparam> | ||
| /// <param name="arg1">The first parameter of the method that this delegate encapsulates.</param> | ||
| /// <param name="arg2">The second parameter of the method that this delegate encapsulates.</param> | ||
| /// <returns>The return value of the method that this delegate encapsulates.</returns> | ||
| public delegate TResult Func<in T1, in T2, out TResult>(T1 arg1, T2 arg2); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| // | ||
| // Copyright (c) .NET Foundation and Contributors | ||
| // Portions Copyright (c) Microsoft Corporation. All rights reserved. | ||
| // See LICENSE file in the project root for full license information. | ||
| // | ||
|
|
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| namespace System | ||
| { | ||
| /// <summary> | ||
| /// Represents the base class for classes that contain event data, and provides a value to use for events that do not include event data. | ||
| /// </summary> | ||
| public class EventArgs | ||
| { | ||
| /// <summary> | ||
| /// Provides a value to use with events that do not have event data. | ||
| /// </summary> | ||
| public static readonly EventArgs Empty = new EventArgs(); | ||
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| /// <summary> | ||
| /// Initializes a new instance of the <see cref="EventArgs"/> class. | ||
| /// </summary> | ||
| public EventArgs() | ||
| { | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| // | ||
| // Copyright (c) .NET Foundation and Contributors | ||
| // Portions Copyright (c) Microsoft Corporation. All rights reserved. | ||
| // See LICENSE file in the project root for full license information. | ||
| // | ||
|
|
||
| namespace System | ||
| { | ||
| /// <summary> | ||
| /// Represents the method that will handle an event that has no event data. | ||
| /// </summary> | ||
| /// <param name="sender">The source of the event.</param> | ||
| /// <param name="e">An object that contains no event data.</param> | ||
| public delegate void EventHandler(object sender, EventArgs e); | ||
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| /// <summary> | ||
| /// Represents the method that will handle an event when the event provides data. | ||
| /// </summary> | ||
| /// <typeparam name="TEventArgs">The type of the event data generated by the event.</typeparam> | ||
| /// <param name="sender">The source of the event.</param> | ||
| /// <param name="e">An object that contains the event data.</param> | ||
| #pragma warning disable S3246 // This is nanoFramework implementation of the EventHandler. It's meant to be this way. | ||
| public delegate void EventHandler<TEventArgs>(object sender, TEventArgs e); | ||
| #pragma warning restore S3246 // Generic type parameters should be co/contravariant when possible | ||
| } |
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