bytes

Data
import "bytes"

Implements functions for manipulating byte slices. Similar to strings package but for []byte.

Example

package main

import (
    "bytes"
    "fmt"
)

func main() {
    b := []byte("Hello, World")
    fmt.Println(bytes.Contains(b, []byte("World")))
    fmt.Println(bytes.ToUpper(b))
}

Key Types & Functions

BufferContainsSplitJoinReplaceNewReader

About bytes

The bytes package (imported as bytes) belongs to the Data category of Go packages. Implements functions for manipulating byte slices. Similar to strings package but for []byte.

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 bytes package follows Go's philosophy of simplicity and composability — small, focused packages that combine through interfaces like io.Reader and io.Writer.

When using bytes 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

stringsiofmt