What's the difference between std::for_each and range-based for in C++?
Both are used for iterating over collections, but std::for_each is a function template while range-based for is a simpler syntax.
Can you give me an example of each?
Sure! For std::for_each: std::for_each(vec.begin(), vec.end(), [](int n){ std::cout << n; });
For range-based for: for (int n : vec) { std::cout << n; }
.
Which one is more efficient?
In most cases, range-based for is more efficient and easier to read, but std::for_each can be more flexible with custom operations.
Are there any scenarios where std::for_each is preferred?
Yes, std::for_each is preferred when you need to use complex operations or when working with algorithms that require function objects.
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