Swift array to array of tuples

问题

I have the following two arrays:

let xaxis = ["monday", "tuesday", "wednesday", "thursday", "friday"]
let yaxis = [1, 2, 3, 4, 5]

I would like to merge them into an array that looks like this:

[ ("monday", 1), ("tuesday", 2), ("wednesday", 3), ("thursday", 4), ("friday", 5)]

回答1:

Use zip and map:

let xaxis = ["monday", "tuesday", "wednesday", "thursday", "friday"]
let yaxis = [1, 2, 3, 4, 5]

let tuples = zip(xaxis, yaxis).map { ($0, $1) }

回答2:

Try this:

let xaxis = ["monday", "tuesday", "wednesday", "thursday", "friday"]

let yaxis = [1, 2, 3, 4, 5]

var newArr = [(String, Int)]()

for i in 0..<xaxis.count {
        newArr.append((xaxis[i], yaxis[i]))
}
print(newArr)

回答3:

Try this:

let arrayMerged = zip(xaxis, yaxis).map { ($0, $1) }

or this:

let arrayMerged = Array(zip(xaxis, yaxis))

回答4:

let tuples = xaxis.enumerated().map { (index, value) in (value, yaxis[index]) }

Assuming yaxis's count always matches to xaxis.

来源：https://stackoverflow.com/questions/45911256/swift-array-to-array-of-tuples