Golang : Check if a string contains multiple sub-strings in []string?
Problem :
You have a string and you use strings.Contains()
function to determine if there is a sub-string inside the main string.
Such as :
Main string : ["apple is fruit"]
Sub string : ["apple"]
Now, you want to check against multiple sub-strings instead of just a single sub-string.
Main string : ["apple is fruit and tomato is a vegetable"]
Sub strings : ["fruit", "apple", "orange"]
How to do that?
Solution :
I've developed a bad word language filter for my own use. The has()
function below used the strings.Index()
function to determine if a bad word is inside the main string and break the for loop at first instance of a bad word detected. You can modified it for your own use. Perhaps, append those bad words into a slice and report them instead of breaking the for loop at first instance.
func has(input string, words []string) (bool, string) {
for _, word := range words {
if strings.Index(input, word) > -1 {
return true, word
break
}
}
return false, ""
}
var badWords = []string{"fuck", "shit", "cunt"}
result, badWordFound := has(input, badWords)
if result {
fmt.Println("The word %s is a bad word.\n", badWordFound)
}
Is there another way to do this? Sure! You can use the strings.ContainsAny()
function too.
Here you go!
package main
import (
"fmt"
"strings"
)
func main() {
x := "I feel like having a good sleep tonight"
y := []string{"like", "having"}
for i := 0; i < len(y); i++ {
//fmt.Println(strings.ContainsAny(x,y[i]))
if strings.ContainsAny(x, y[i]) {
fmt.Printf("Detected word - [%s]\n", y[i])
}
}
}
Play at : http://play.golang.org/p/CSVQprocj4
Happy coding!
Reference :
https://www.socketloop.com/tutorials/golang-how-to-check-if-a-string-contains-another-sub-string
See also : Golang : How to check if a string contains another sub-string?
By Adam Ng
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