/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 vote165 views1 answer
Ts construct signature
TypeScript
0 vote152 views1 answer
How to print list contents in java
TypeScript
0 vote174 views2 answers
Rails precompile assets production
TypeScript
0 vote173 views1 answer
Angular output send click event to parent
TypeScript
0 vote160 views1 answer
Write a prolog program to find the sum of elements in given list.
TypeScript
0 vote174 views1 answer
How to print certain elements of an array
TypeScript
2 votes156 views1 answer
Create database and grant user rights mariadb
TypeScript
-1 vote155 views1 answer
Typescript http get attach headers
TypeScript
0 vote150 views2 answers
Rails precompile assets in a directory
TypeScript
3 votes152 views4 answers
Remove item from array if exists in another array
TypeScript