Using typeof in Xtend

Question

It might be the stupidest question on Xtend. But here it goes

I'm trying to convert the following to Xtend

if (obj instanceof Integer) {
    message.reply((Integer)obj);
}

I know that I would need to use the typeof function.

Can I use typeofas a direct replacement to instanceof?

Answer 1

typeof is an old syntax to retrieve the class object. If you're using a newer version of Xtend this is no longer required. Apart from that the instanceof syntax is just like in Java but the cast statement is different so you would write:

if (obj instanceof Integer) {
    message.reply(obj as Integer)
}

Since Xtend 2.5 auto-casting is supported so you can even write:

if (obj instanceof Integer) {
    message.reply(obj) // obj is automatically casted to Integer
}