Go provides simple and efficient ways to read and write files using the os package. The os.ReadFile and os.WriteFile functions, introduced in Go 1.16, offer a convenient interface for basic file operations without needing to manage file handles manually.
The os.WriteFile function takes a filename, byte slice, and file permission bits, making it easy to write data to a file in a single operation. Similarly, os.ReadFile reads an entire file into memory as a byte slice, which is perfect for small to medium-sized files. Both functions handle file opening and closing automatically.
These functions are ideal for configuration files, small data files, and other scenarios where you don’t need fine-grained control over file operations. For larger files or streaming scenarios, consider using *os.File with buffered I/O.