Golang 文字列変更の詳細な説明: 動的な調整と可変性

str1 := "Hello"
str2 := "World"

str3 := str1 + " " + str2

fmt.Println(str3) // 输出: Hello World

name := "John"
age := 30

bio := fmt.Sprintf("My name is %s and I am %d years old.", name, age)

fmt.Println(bio) // 输出: My name is John and I am 30 years old.

str := "Hello World"

bytes := []byte(str)
bytes[0] = 'G'

str = string(bytes)

fmt.Println(str) // 输出: Gello World

import "github.com/google/go-stringutil"

mstr := gostringutil.NewMutableString("Hello World")

mstr.Replace("World", "Universe")

fmt.Println(mstr.String()) // 输出: Hello Universe

func buildBuffer(size int) string {
    buffer := ""

    for i := 0; i < size; i++ {
        buffer += fmt.Sprintf("%d", i)
    }

    return buffer
}