/TypeScript/Check if element exists in array golang

Check if element exists in array golang

Golang check if in array

func stringInSlice(a string, list []string) bool {
    for _, b := range list {
        if b == a {
            return true
        }
    }
    return false
}

Check if element exists in array golang

Mostafa has already pointed out that such a method is trivial to write, and mkb gave you a hint to use the binary search from the sort package. But if you are going to do a lot of such contains checks, you might also consider using a map instead.

It's trivial to check if a specific map key exists by using the value, ok := yourmap[key] idiom. Since you aren't interested in the value, you might also create a map[string]struct{} for example. Using an empty struct{} here has the advantage that it doesn't require any additional space and Go's internal map type is optimized for that kind of values. Therefore, map[string] struct{} is a popular choice for sets in the Go world.

Similar codes

0 vote201 views1 answer
How to check which item is in an object property c#
TypeScript
9 votes178 views2 answers
Array contains typescript
TypeScript
0 vote182 views1 answer
Module '"@angular/fire/firestore"' has no exported member 'AngularFirestoreDocument'
TypeScript
2 votes178 views1 answer
How to call angular 8 form validation ngif
TypeScript
47 votes276 views9 answers
Cannot be loaded because running scripts is disabled on this system
TypeScript
1 vote195 views1 answer
Gets ents within range gmod lua
TypeScript
0 vote176 views1 answer
Push array elements if not exists mongoose
TypeScript
0 vote218 views2 answers
"Type error: ReflectionFunction::__construct() expects parameter 1 to be string, array given"
TypeScript
9 votes162 views3 answers
Ng.ps1 cannot be loaded because running scripts is disabled on this system vscode
TypeScript
0 vote171 views1 answer
Woocommerce change related products tect
TypeScript