I/O and Filesystems

Input/output and file operations: the iostream stream abstraction (why it is slow and how to use it efficiently), RAII and binary portability pitfalls of fstream, and the filesystem library that finally brings cross-platform support in C++17.

iostream: Stream Abstraction and Why It Is Slow→fstream: File Stream I/O and RAII→filesystem: C++17 Cross-Platform Filesystem→