reduce dictionary into array of strings in swift

You can use the reduce function to convert the values of a dictionary into an array of strings. Here's an example:

main.swift
let myDict = ["one": 1, "two": 2, "three": 3]

let myArray = myDict.reduce([]) { (result, tuple) -> [String] in
    let (key, value) = tuple
    return result + ["\(key): \(value)"]
}

print(myArray) // Output: ["one: 1", "two: 2", "three: 3"]
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In this code, myDict is the dictionary that we want to convert into an array of strings. We use the reduce function on this dictionary to iterate over each key-value pair, and accumulate a new array of strings based on those values.

The reduce function takes an initial value for the result (in this case, an empty array) and a closure that specifies how to combine the current result with each key-value pair in the dictionary.

Inside that closure, we destructure the current tuple into its key and value components. We then combine the current result with a new array containing the string representation of the key-value pair, and return the resulting array.

At the end of this process, myArray will contain an array of strings representing each key-value pair in myDict.