The os package provides platform-independent operating-system functionality in Go. Its os.File type supports file operations, while os.Open opens a named file for read-only access and returns either a file descriptor or an error. section 3.1.2
Choose the file-opening function according to the operation:
- Use os.Open for read-only access. section 3.1.2
- Use os.Create to write a file; it grants read/write permissions and truncates an existing file. section 3.1.2
- Use os.OpenFile when more general file-opening options are required. section 3.1.2
Reading a bookworm file
A loader can call os.Open(filePath), return the error when opening fails, and defer f.Close() after success. This supports functions that return ([]Bookworm, error) while keeping file cleanup near the opening operation. section 3.1.2
