- Check if a string starts with a substring
- Check if a string ends with a substring
- Calculate the maximum string length in a slice of strings
- Comparing strings case insensitive
Check if a string starts with a substring
package main
import (
"strings"
)
func main() {
strings.HasPrefix("flavio", "fla") // true
}
Check if a string ends with a substring
package main
import (
"strings"
)
func main() {
strings.HasSuffix("flavio", "vio") // true
}
Calculate the maximum string length in a slice of strings
// calculatemaxwidth given a slice of strings calculates the maximum
// length
func calculatemaxwidth(lines []string) int {
w := 0
for _, l := range lines {
len := utf8.RuneCountInString(l)
if len > w {
w = len
}
}
return w
}
Comparing strings case insensitive
Instead of running ToUpper() or ToLower() from the strings or bytes packages, use strings.EqualFold() or bytes.EqualFold(), because they are guaranteed to work across all languages.
package main
import (
"bytes"
"fmt"
)
func main() {
fmt.Println(bytes.EqualFold([]byte("Go"), []byte("go")))
}