Is there a function or method Array.reduce in swift?

Question

I would like to reduce the array of strings into a single string using the built in array.reduce closure method.

I know using the join method is easier. Just wanted to see if there is a way?

Answer 1

Yes, there is a reduce method in arrays that you can use.

let arr = ["hello", "world"]
let result = arr.reduce("") { (prev, curr) -> String in
    return prev + curr
}
// even shorter method
let result2 = arr.reduce("") {$0 + $1} // arr.reduce("", +) will produce the same result

print(result) // Prints "Hello world"
print(result2) // "Hello world"