如何在Go中用符文遍历字符串? [英] How can I iterate over a string by runes in Go?

问题描述

我想要这个:

for i := 0; i < len(str); i++ {
    dosomethingwithrune(str[i]) // takes a rune
}

但是事实证明， str [i] 的类型是 byte ( uint8 )，而不是 rune .

But it turns out that str[i] has type byte (uint8) rather than rune.

如何通过符文而不是字节遍历字符串?

How can I iterate over the string by runes rather than bytes?

推荐答案

请参见有效的Go语言中的示例:

for pos, char := range "日本語" {
    fmt.Printf("character %c starts at byte position %d\n", char, pos)
}

此打印:

character 日 starts at byte position 0
character 本 starts at byte position 3
character 語 starts at byte position 6

对于字符串，该范围为您完成了更多工作，使您分出不同的个人通过解析UTF-8来编码Unicode代码.

For strings, the range does more work for you, breaking out individual Unicode code points by parsing the UTF-8.

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