如何将int32 Unicode转换为字符串

Question

I have a function that receives a list of hostnames , line by line, in an int32 slice format. This is the function:

func HandlePipeList(targetsList []int32) {
    //Print output item by item
    for i := 0; i < len(targetsList); i++ {
        fmt.Printf("%c", targetsList[i])
    }
}

Since I'm converting it to %c with fmt, it works and prints the hostnames correctly. My problem arises when I try to pass targetsList as a string to another function. How can I make the same convertion for targetsList so that the lines could be passed as string? (strconv.Itoa didn't work here).

Answer 1

A unicode code point in Go is a rune. Go type rune is an alias for Go type int32.

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The Go Programming Language Specification

Numeric types

int32   the set of all signed 32-bit integers

rune    alias for int32

Conversions

Conversions to and from a string type

Converting a slice of runes to a string type yields a string that is the concatenation of the individual rune values converted to strings.

---

Use a string type conversion. For example,

package main

import (
    "fmt"
)

func main() {
    targetsList := []int32("Testing, testing, ...")

    str := string(targetsList)
    fmt.Println(str)
}

Playground: https://play.golang.org/p/d-s0uLFl9MG

Output:

Testing, testing, ...

---

Reference: The Go Blog: Strings, bytes, runes and characters in Go