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uint64型を[]bytes型に変換する

Posted at

日本語の記事が見つからなかったのでメモしておきます.

こちらを参考にしました.

enconding/binaryパッケージのPutUint64メソッドでuint64型から[]bytes型に変換出来ます.

コード例

package main

import (
	"fmt"
	"encoding/binary"
)

func main() {
	u := uint64(1000)
	b := make([]byte, 8)
	binary.LittleEndian.PutUint64(b, u)
	fmt.Printf("%T:%v  %T:%v", u, u, b, b)
}

実行結果

uint64:1000  []uint8:[232 3 0 0 0 0 0 0]

まとめ

encoding/binaryパッケージを使うことで,uint64型を[]bytes型に変換できます.

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