英文:
Writing a toUpper function for unicode letters
问题
从这里开始http://blog.golang.org/slices（就在Capacity部分之前）
type path []byte
func (p path) ToUpper() {
for i, b := range p {
if 'a' <= b && b <= 'z' {
p[i] = b + 'A' - 'a'
}
}
}
func main() {
pathName := path("/usr/bin/tso")
pathName.ToUpper()
string1 := string(pathName)
fmt.Printf("%s\n", string1)
}
在学习Golang的切片和相关内容时，我看到了这个函数用于转换ASCII字符。你如何修改这个函数以处理Unicode字符呢？
英文:
From here http://blog.golang.org/slices (it's right before the Capacity section)
type path []byte
func (p path) ToUpper() {
for i, b := range p {
if 'a' <= b && b <= 'z' {
p[i] = b + 'A' - 'a'
}
}
}
func main() {
pathName := path("/usr/bin/tso")
pathName.ToUpper()
string1 := string(pathName)
fmt.Printf("%s\n", string1)
}
Was reading on slices and stuff in golang. This is a function to convert ascii characters. How would you go about turning this function to handle unicode as well?
答案1
得分: 6
你在使用 Unicode 时应该使用 rune。Golang 中的 unicode 包有一个 ToUpper 函数。
package main
import (
"unicode"
"fmt"
)
type path []rune
func (p path) ToUpper() {
for i, b := range p {
p[i] = unicode.ToUpper(b)
}
}
func main() {
pathName := path("/usr/bin/tso")
pathName.ToUpper()
string1 := string(pathName)
fmt.Printf("%s\n", string1)
}
在 playground 上查看示例：example
英文:
You should use rune when you use unicode. The unicode package in golang has a toUpper function.
package main
import (
"unicode"
"fmt"
)
type path []rune
func (p path) ToUpper() {
for i, b := range p {
p[i] = unicode.ToUpper(b)
}
}
func main() {
pathName := path("/usr/bin/tso")
pathName.ToUpper()
string1 := string(pathName)
fmt.Printf("%s\n", string1)
}
in the playground:
example
答案2
得分: 1
你可以使用strings.Map函数将一个函数应用于字符串的每个字符，并返回映射后的字符串。以下是示例代码的Playground链接：
package main
import (
"fmt"
"strings"
"unicode"
)
func main() {
pathName := strings.Map(unicode.ToUpper, "/usr/bin/tso")
fmt.Printf("%s\n", pathName)
}
英文:
You can use strings.Map to apply a function to each rune of a string, returning the mapped string. Playground link to this code:
package main
import (
"fmt"
"strings"
"unicode"
)
func main() {
pathName := strings.Map(unicode.ToUpper, "/usr/bin/tso")
fmt.Printf("%s\n", pathName)
}
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