bufio

I/O
import "bufio"

Implements buffered I/O wrapping io.Reader and io.Writer for efficient reading and writing.

Example

package main

import (
    "bufio"
    "fmt"
    "os"
)

func main() {
    scanner := bufio.NewScanner(os.Stdin)
    for scanner.Scan() {
        fmt.Println(scanner.Text())
    }
}

Key Types & Functions

ScannerReaderWriterNewScannerNewReader

About bufio

The bufio package (imported as bufio) belongs to the I/O category of Go packages. Implements buffered I/O wrapping io.Reader and io.Writer for efficient reading and writing.

Go's standard library is one of the language's greatest strengths, providing production-ready implementations for networking, cryptography, encoding, I/O, and more. The bufio package follows Go's philosophy of simplicity and composability — small, focused packages that combine through interfaces like io.Reader and io.Writer.

When using bufio in production, follow Go best practices: handle errors explicitly, use context for cancellation and timeouts, prefer composition over inheritance, and write table-driven tests. The Go documentation at pkg.go.dev provides comprehensive API references and examples for every exported type and function.

Related Packages

ioosfmtstrings