字符串.TrimLeftFunc()函数返回字符串s 的一个切片,其中删除了所有满足 f(c) 的前导 Unicode 代码点 c。
句法:
func TrimLeftFunc(s string, f func(rune) bool) string
这里,s 是字符串,func() 是满足字符串字符的方法。
返回值:从字符串去除前导字符后返回字符串。
示例 1:
// Golang program to illustrate
// the strings.TrimLeftFunc() Function
package main
// importing fmt, unicode and strings
import (
"fmt"
"strings"
"unicode"
)
// Calling Main method
func main() {
// Here we have a string. The function
// returns true for the letters
// and all other will trim out
// from the string only from Left
fmt.Print(strings.TrimLeftFunc("77GeeksForGeeks!!!", func(r rune) bool {
return !unicode.IsLetter(r)
}))
}
输出:
GeeksForGeeks!!!
示例 2:
// Golang program to illustrate
// the strings.TrimLeftFunc() Function
package main
// importing fmt, unicode and strings
import (
"fmt"
"strings"
"unicode"
)
// Calling Main method
func main() {
// Here we have a string. The function
// returns true for the letters
// and numbers as well
// and all other will trim out
// from the string only from left
fmt.Print(strings.TrimLeftFunc("!!!34GeeksForGeeks!!!!", func(r rune) bool {
return !unicode.IsLetter(r) && !unicode.IsNumber(r)
}))
}
输出:
34GeeksForGeeks!!!!