Shulou(Shulou.com)06/01 Report--

This article mainly introduces "how C++ uses range for instead of ordinary for sentences". In daily operation, I believe many people have doubts about how C++ uses range for instead of ordinary for sentences. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for everyone to answer the questions of "how C++ uses range for instead of ordinary for sentences". Next, please follow the editor to study!

ES.71: if you can, use a range for statement instead of a normal for statement.

Reason (reason)

Readability. Error prevention. Efficiency.

Readability, error prevention and efficiency.

Example (sample)

For (gsl::index I = 0; I < v.size (); + + I) / / bad

Cout

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