How to combine two Dictionary instances in Swift?

Question

How do I append one Dictionary to another Dictionary using Swift?

I am using the AlamoFire library to send a

Answer 1

SequenceType.forEach (implemented by Dictionary) provides an elegant solution to add a dictionary's elements to another dictionary.

dic1.forEach { dic2[$0] = $1 }

For example

func testMergeDictionaries() {
    let dic1 = [1:"foo"]
    var dic2 = [2:"bar"]

    dic1.forEach { dic2[$0] = $1 }

    XCTAssertEqual(dic2[1], "foo")
}