string - 将字符串索引为字符

Question

The elements of strings have type byte and may be accessed using the usual indexing operations.

如何获取字符串中的元素作为字符？

"some"[1] -> "o"

Answer 1

最简单的解决方案是将其转换为 rune 数组:

var runes = []rune("someString")

请注意，当您迭代一个字符串时，您不需要转换。请参阅 Effective Go 中的示例:

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

这打印

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