Hello all, in C# we have Tuple class (a helper cla...

# getting-started

[diego.brum]

Hello all, in C# we have Tuple class (a helper class) to make easy use destructor, for instance

var (x, y) = Tuple.Create("hello", "world");
// or
var (x, y) = ("hello", "again");
// or also
var x = ("hello", "again");
x.Item1 // hello
x.Item2 // again
// or also also
var x = (Xpto: "Hello", Yup: "Again")
x.Xpto 
x.Yup

in Kotlin I had read about destructors and find the Pair class
Is it the equivalent? And is it possible initialise "Pair" on the fly like C#?

[Ruckus]

You can use to to make a `Pair`: val (x, y) = "hello" to "again"

[Ruckus]

val x = "hello" to "again"
x.first
x.second

[Ruckus]

There's also a Triple class, but Kotlin does not have tuples, so you cannot create arbitrary sizes or use custom keys.

[diego.brum]

Nice, tks 🙂

[Casey Brooks]

ad-hoc objects can be helpful intermediate types for data processing, where you may have been using tuples before https://kotlinlang.org/docs/object-declarations.html#object-expressions

[diego.brum]

NIce one! Tks 🙂

[Ruckus]

Wow, I've been using Kotlin for years and wasn't aware of that (the object expression without super types working privately). Thanks for the pointer.

[Jordan Foo]

Also @diego.brum, typeAliases can make it cleaner to read and use

typealias MyPair = Pair<String, Int>

and

val myPair: MyPair = "myString" to 1
val (myString, myInt) = myPair

[Jordan Foo]

Helps for when you're using a pair as a composite key for maps, for example (which is valid because the pair implementation is a data class, which overwrites equals and hashcode)