FirstItem

Available since Koryphe version 1.1.0

For a given Iterable, a FirstItem will extract the first item.

Examples

Java

JSON

Full JSON

Python

final FirstItem<Integer> function = new FirstItem<>();

{
  "class" : "FirstItem"
}

{
  "class" : "uk.gov.gchq.koryphe.impl.function.FirstItem"
}

g.FirstItem()

Input type:

java.lang.Iterable

Example inputs:

Input Type	Input	Result Type	Result
java.util.ArrayList	[2, 3, 5]	java.lang.Integer	2
java.util.ArrayList	[7, 11, 13]	java.lang.Integer	7
java.util.ArrayList	[17, 19, null]	java.lang.Integer	17
java.util.ArrayList	[null, 19, 27]		null
	null		IllegalArgumentException: Input cannot be null