通用方法,多约束 [英] Generic method with multiple constraints
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问题描述
我有它有两个泛型参数的通用方法。我试图编译下面的code,但它不工作。它是一个.NET的限制?是否有可能有多个约束不同的参数?
公共TResponse呼叫< TResponse,TRequest>(TRequest要求)
其中,TRequest:MyClass的,TResponse:MyOtherClass
解决方案
这是可能做到这一点,你拿到的语法稍有不妥。你需要一个其中,
每个约束而不是将它们用逗号分隔:
公共TResponse呼叫< TResponse,TRequest>(TRequest要求)
其中,TRequest:MyClass的
其中,TResponse:MyOtherClass
I have a generic method which has two generic parameters. I tried to compile the code below but it doesn't work. Is it a .NET limitation? Is it possible to have multiple constraints for different parameter?
public TResponse Call<TResponse, TRequest>(TRequest request)
where TRequest : MyClass, TResponse : MyOtherClass
解决方案
It is possible to do this, you've just got the syntax slightly wrong. You need a where
for each constraint rather than separating them with a comma:
public TResponse Call<TResponse, TRequest>(TRequest request)
where TRequest : MyClass
where TResponse : MyOtherClass
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