Apply a callback to an array: Difference between revisions

=={{header|Fantom}}==

In Fantom, functions can be passed to a collection iterator, such as 'each'. 'map' is used similarly, and the results are collected into a list.

<lang fantom>

class Main

{

public static Void main ()

{

[1,2,3,4,5].each |Int i| { echo (i) }

Int[] result := [1,2,3,4,5].map |Int i->Int| { return i * i }

echo (result)

}

}

</lang>

Output:

<pre>

1

2

3

4

5

[1, 4, 9, 16, 25]

</pre>