When Should You Use Templates

最新推荐文章于 2025-07-05 15:56:14 发布

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本文探讨了C++中模板的多种用途，如创建类型安全的集合类、增加额外类型检查及封装运算符重载等。通过使用模板可以简化代码编写，提供更直观的抽象方式，并确保类型安全。

Templates are often used to:

Create a type-safe collection class (for example, a stack) that can operate on data of any type.
Add extra type checking for functions that would otherwise take void pointers.
Encapsulate groups of operator overrides to modify type behavior (such as smart pointers).

Most of these uses can be implemented without templates; however, templates offer several advantages:

Templates are easier to write. You create only one generic version of your class or function instead of manually creating specializations.
Templates can be easier to understand, since they can provide a straightforward way of abstracting type information.
Templates are type-safe. Because the types that templates act upon are known at compile time, the compiler can perform type checking before errors occur.