C＃：为通用类名全局别名？ [英] C#: Globally alias a generic class name?

问题描述

在某些项目中，我们使用的是泛型，我们得到很多类似这样的行：

in some project we are using Generics, and we get a lot of lines like this:

Line<SomeTClass,SomeCClass> myLine =
           (Line<SomeTClass,SomeCClass>)LineFactory.CreateLine(...)

我们可以使用X = Line< SomeTClass，SomeCClass> 声明。

We can declare local alias, with using X = Line<SomeTClass,SomeCClass>.

然后我们可以写， X myLine =（X）LineFactory.CreateLine（...）。

我们有很多组合< T，C> 的值，但我们经常使用相同的值。是否有可能在全局范围内取消声明using，以便我们不必在每个文件中声明别名？

We have a lot a combination of <T,C> but we often use the same. Is it possible de declare the using globally, so that we won't have to declare the alias in each file?

推荐答案

否例如全局别名。您可以使用类型推断来简化声明：

No such thing as a global alias. What you can do is use type inference to simplify your declarations:

var myLine = (Line<SomeTClass, SomeCClass>)LineFactory.CreateLine(...);

如果对于推理系统而言不够具体，则可以使CreateLine（）方法通用为强制执行：

and if that's not specific enough for the inference system, you can make the CreateLine() method generic to enforce it:

var myLine = LineFactory.CreateLine<Line<SomeTClass, SomeCClass>>(...);

给定LineFactory类型的名称，甚至可以简化一下：

and given the name of the LineFactory type, maybe even simplify it some more:

var myLine = LineFactory.CreateLine<SomeTClass, SomeCClass>(...);

最后一种选择对我来说是一种正确的感觉，我无法完全表达出来。以防万一您需要一点帮助，方法声明看起来像这样：

This last option feels "right" to me in some way I can't fully articulate. Just in case you need a little help, the method declaration would look like something this:

public static class LineFactory 
{
    public static Line<T,C> CreateLine<T,C>(...) { ... }
}

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