In Golang, you can use the Strings package to pad a string with a specific character to a specified length. The Repeat function can be used to repeat a character a certain number of times, and the Len function can be used to get the length of a string.
Here's an example of how you can pad a string with a specific character to a specified length:
package main
import (
"fmt"
"strings"
)
func PadString(s string, padChar rune, length int) string {
if length <= len(s) {
return s
}
padLength := length - len(s)
pad := strings.Repeat(string(padChar), padLength)
return s + pad
}
func main() {
s := "hello"
padded := PadString(s, '-', 10)
fmt.Println(padded)
}
In this example, the PadString function takes three arguments: the original string s, the character to pad with padChar, and the desired length length. It calculates the pad length by subtracting the length of the original string from the desired length. Then, using the Repeat function from the Strings package, it repeats the padChar a certain number of times to create the padding. Finally, it concatenates the original string with the padding and returns the padded string.
In the main function, we test the PadString function by padding the string "hello" with hyphens ("-") to a length of 10. The output would be "hello-----".