Without iterating over the entire array, how can I check if x
in array using Go? Does the language have a construct?
Like Python: if "x" in array: ...
There is no built-in operator to do it in Go. You need to iterate over the array. You can write your own function to do it, like this:
func stringInSlice(a string, list []string) bool {
for _, b := range list {
if b == a {
return true
}
}
return false
}
If you want to be able to check for membership without iterating over the whole list, you need to use a map instead of an array or slice, like this:
visitedURL := map[string]bool {
"http://www.google.com": true,
"https://paypal.com": true,
}
if visitedURL[thisSite] {
fmt.Println("Already been here.")
}