unsafe

Documentation

Index

• func BytesToString(src []byte) (d string)
• func ExtendBytes(dptr *[]byte, newLen int)
• func StringToBytes(src string) (d []byte)

Examples

• BytesToString
• ExtendBytes
• StringToBytes

Functions

func BytesToString

func BytesToString(src []byte) (d string)

BytesToString casts src to a string without extra memory allocation. The string returned by this function shares memory with "src".

Example

package main

import (
	"fmt"

	"github.com/grailbio/base/unsafe"
)

func main() {
	fmt.Println(unsafe.BytesToString([]byte{'A', 'b', 'C'}))
}

Output:

AbC

func ExtendBytes

func ExtendBytes(dptr *[]byte, newLen int)

ExtendBytes extends the given byte slice, without zero-initializing the new storage space. The caller must guarantee that cap(d) >= newLen (using e.g. a Grow() call on the parent buffer).

Example

package main

import (
	"fmt"

	"github.com/grailbio/base/unsafe"
)

func main() {
	d := []byte{'A', 'b', 'C'}
	d = d[:1]
	unsafe.ExtendBytes(&d, 2)
	fmt.Println(d)
}

Output:

[65 98]

func StringToBytes

func StringToBytes(src string) (d []byte)

StringToBytes casts src to []byte without extra memory allocation. The data returned by this function shares memory with "src".

Example

package main

import (
	"fmt"

	"github.com/grailbio/base/unsafe"
)

func main() {
	fmt.Println(unsafe.StringToBytes("AbC"))
}

Output:

[65 98 67]