dotnet add package Raiqub.ImplicitGenerics --version 1.1.0
NuGet\Install-Package Raiqub.ImplicitGenerics -Version 1.1.0
<PackageReference Include="Raiqub.ImplicitGenerics" Version="1.1.0" />
paket add Raiqub.ImplicitGenerics --version 1.1.0
#r "nuget: Raiqub.ImplicitGenerics, 1.1.0"
// Install Raiqub.ImplicitGenerics as a Cake Addin #addin nuget:?package=Raiqub.ImplicitGenerics&version=1.1.0 // Install Raiqub.ImplicitGenerics as a Cake Tool #tool nuget:?package=Raiqub.ImplicitGenerics&version=1.1.0
Provides a mechanism that allows generic type parameter to be inferred implicitly.
Sometimes when developing generic methods extensions it needs additional generic parameter types, and when any of types can not be inferred then all generic parameter types must be specified.
This library brings interfaces and factories listed below
IOutParam<out T> interface and
OutParam class to help developers create method
parameters that lets the compiler infer the type of the generic parameter.
IOutParam<out T>interface and
OutParamfactory class for covariant parameters;
IInParam<out T>interface and
InParamfactory class for contravariant parameters;
ITypeParam<out T>interface and
TypeParamfactory class for non-variant parameters;
Raiqub.ImplicitGenerics is currently compatible with the following frameworks:
- .NET Standard >= 1.0
- .NET 6.0
Reference the package <br/> Add the package to your project, for example via:
Install-Package Raiqub.ImplicitGenerics --or-- dotnet add package Raiqub.ImplicitGenerics
Add using <br/> To use the types provided by this library add using on top of
You should now be ready to use the library types on your project.
To understand the scenarios covered by this library, some examples are given.
Registering adapter on the dependency injector
Take an example of a method that registers an adapter:
public static IServiceCollection AddAdapter<TIn, TOut, TAdapter>( this IServiceCollection services) where TAdapter : class, IAdapter<TIn, TOut> => services.AddSingleton<IAdapter<TIn, TOut>, TAdapter>();
To call this method all three parameters must be specified:
services.AddAdapter<int, float, Int32ToFloatAdapter>()
But, using the type provided by this library:
public static IServiceCollection AddAdapter<TIn, TOut>( this IServiceCollection services, IOutParam<IAdapter<TIn, TOut>> outParam) => services.AddSingleton(typeof(IAdapter<TIn, TOut>), outParam.Type);
Then the call is just:
using Raiqub.ImplicitGenerics; services.AddAdapter(OutParam.Of<Int32ToFloatAdapter>())
Down casting dictionary values
Take another example of a method that down-cast the values of a dictionary:
public static IDictionary<TKey, TOther> DownCastValues<TKey, TValue, TOther>( this IDictionary<TKey, TValue> dictionary) where TKey : notnull where TValue : class where TOther : class, TValue => dictionary .Select(it => (it.Key, Value: (TOther)it.Value)) .ToDictionary(it => it.Key, it => it.Value);
And to call this method:
IDictionary<string, string> result = dict.DownCastValues<string, object, string>();
But, using the provided
ITypeParam<out T> interface:
public static IDictionary<TKey, TOther> DownCastValues<TKey, TValue, TOther>( this IDictionary<TKey, TValue> dictionary, ITypeParam<TOther> typeParam) where TKey : notnull where TValue : class where TOther : class, TValue => dictionary .Select(it => (it.Key, Value: (TOther)it.Value)) .ToDictionary(it => it.Key, it => it.Value);
Finally, the call is:
using Raiqub.ImplicitGenerics; IDictionary<string, string> result = dict.DownCastValues(TypeParam.Of<string>());
You can find more examples going to the test project: ParamTest.cs.
If something is not working for you or if you think that the source file should change, feel free to create an issue or Pull Request. I will be happy to discuss and potentially integrate your ideas!
See the LICENSE file for details.
|Product||Versions Compatible and additional computed target framework versions.|
|.NET||net5.0 was computed. net5.0-windows was computed. net6.0 is compatible. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 was computed. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed.|
|.NET Core||netcoreapp1.0 was computed. netcoreapp1.1 was computed. netcoreapp2.0 was computed. netcoreapp2.1 was computed. netcoreapp2.2 was computed. netcoreapp3.0 was computed. netcoreapp3.1 was computed.|
|.NET Standard||netstandard1.0 is compatible. netstandard1.1 was computed. netstandard1.2 was computed. netstandard1.3 was computed. netstandard1.4 was computed. netstandard1.5 was computed. netstandard1.6 was computed. netstandard2.0 is compatible. netstandard2.1 is compatible.|
|.NET Framework||net45 was computed. net451 was computed. net452 was computed. net46 was computed. net461 was computed. net462 was computed. net463 was computed. net47 was computed. net471 was computed. net472 was computed. net48 was computed. net481 was computed.|
|MonoAndroid||monoandroid was computed.|
|MonoMac||monomac was computed.|
|MonoTouch||monotouch was computed.|
|Tizen||tizen30 was computed. tizen40 was computed. tizen60 was computed.|
|Universal Windows Platform||uap was computed. uap10.0 was computed.|
|Windows Phone||wp8 was computed. wp81 was computed. wpa81 was computed.|
|Windows Store||netcore was computed. netcore45 was computed. netcore451 was computed.|
|Xamarin.iOS||xamarinios was computed.|
|Xamarin.Mac||xamarinmac was computed.|
|Xamarin.TVOS||xamarintvos was computed.|
|Xamarin.WatchOS||xamarinwatchos was computed.|
This package is not used by any NuGet packages.
This package is not used by any popular GitHub repositories.
Add IInParam and ITypeParam