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Using typeof in Xtend

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?

Solution

  • 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
}