What does << do?

[Gaba Luschi]

Reading a sample program that says:
@rooms << Room.new(reference, name, description, connections)

What does the "<<" part do? Thanks!

 

[Sebastian Bachmann]

[Note: parts of this message were removed to make it a legal post.]

Hi,

imho << reads Room.new(reference, name, description, connections) _into_ @rooms

Regards

 

[Stu]

It adds an instance of Room to the @rooms array

 

[John P. Gearhart]

It places a new room in @rooms. Imagine this

target <[gun]< bullet

 

[John Feminella]

The answer is, "it depends on what @rooms is". In Ruby, (almost)
everything's an object, so when you write "@rooms << ...", you're
actually invoking the "<<" method on "@rooms".

If @rooms is an Array, for example, then << will append to the end of
the array, which is probably what's happening here.

~ jf