英文:
Can a for-each loop differentiate between regular and const iterator in a templated class?
问题
我创建了一个带有两种不同迭代器的模板类，一个是常规迭代器，另一个是const迭代器。在使用for-each循环时，编译器是否根据对象的特定实例知道要使用哪个迭代器，无论它是否是const的？如果这是一个愚蠢的问题，我很抱歉，我刚开始学习C++。
英文:
I made a templated class with 2 different iterators, a regular one and a constIterator.
When using a for-each loop, does the complier know which iterator to use according to the specific instance of the object, whether it is const or not?
Sorry if this is a dumb question, I just started learning C++.
答案1
得分: 1
一个基于范围的for循环调用范围表达式上的begin和end（在这种情况下将是您的类类型，可能会有const限定符）来获取迭代器。
这些函数是否返回const迭代器取决于您为您的类实现它们的方式。如果您正确实现了它们，它们应该分别具有非const重载和const重载，每个重载返回适当的迭代器类型。
英文:
A range-based for loop calls begin and end on the range expression (which would be of your class type in this case and potentially const-qualified) to obtain iterators.
Whether these functions return const iterators or not depends on how you implemented them for your class. If you implemented them correctly, they should have a non-const overload and a const overload each, with each returning the appropriate iterator type.
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