/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 vote257 views1 answer
(function (global, factory) { typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : typeof define === 'function' && define.amd ? define(factory) : (global.Popper = factory());
TypeScript
0 vote296 views1 answer
Ts useSelector types react
TypeScript
0 vote260 views1 answer
How to check if all elements are equal C#
TypeScript
2 votes281 views1 answer
Input event typescript
TypeScript
0 vote280 views3 answers
Number to string typescript
TypeScript
0 vote268 views1 answer
Add multiple constraints in create table sql
TypeScript
9 votes264 views1 answer
How to print list as matrix in python without brackets
TypeScript
0 vote269 views1 answer
DecoDe query string to object javascript
TypeScript
0 vote254 views1 answer
Vsc typescript auto build on save
TypeScript
4 votes329 views10 answers
Roblox
TypeScript