在某些情况下可能出现不兼容,例如两个接口使用不同的返回值类型定义同一个方法。
Incompatibilities can arise when, for example, two interfaces define the same method with different return value types.
另一种避免这样的麻烦的方式是永远为方法返回值声明类型,特别是为公用api定义方法的时候。
Another way to prevent these problems is to always declare return types for methods, especially when defining methods for a public API.
为返回值和参数定义XMLserializable类型。
Define XML serializable types for the return value (and the parameters).
你可以可以为变量指明数据类型,输入参数,来自函数的返回值,用户自定义函数以及模板。
You are also able to specify data types for variables, input parameters, return values from functions, user-defined functions and templates.
l你可以定义AsyncTask的参数类型和最终的返回值类型。
You can specify the type, using generics, of the parameters, the progress values and the final value of the task.
现在我们已经知道如何创建新类型了,下一步就要写一些函数了,这些函数用自定义类型做参数和返回值。
Now that we know how to create new types, the next step is to write functions that take programmer-defined objects as parameters and return them as results.
委托是一个定义签名的类型,即方法的返回值类型和参数列表类型。
A delegate declaration defines a reference type that can be used to encapsulate a method with a specific signature.
委托是一个定义签名的类型,即方法的返回值类型和参数列表类型。
A delegate declaration defines a reference type that can be used to encapsulate a method with a specific signature.
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