Examples of using some Scala Option methods

Question

I have read the blog post recommended me here. Now I wonder what some those methods are useful for. Can you show examples of using forall (as opposed to foreach) and toList of Option?

Answer 1

I have one practical example of toList method. You can find it in scaldi (my Scala dependency injection framework) in Module.scala at line 72:

https://github.com/OlegIlyenko/scaldi/blob/f3697ecaa5d6e96c5486db024efca2d3cdb04a65/src/main/scala/scaldi/Module.scala#L72

In this context getBindings method can return either Nil or List with only one element. I can retrieve it as Option with discoverBinding. I find it convenient to be able to convert Option to List (that either empty or has one element) with toList method.