Function
first(_:)
Returns the first element of a collection.
func first(_ collection: any EcoreValue) throws -> any EcoreValue
Parameters
collection-
The collection to get the first element from
Return Value
The first element of the collection
Discussion
The first operation returns the first element of a non-empty collection. If the collection is empty, it throws an error.
Examples
let numbers = [1, 2, 3] as [EInt]
let firstNum = try first(numbers) // Result: 1