self or void?

[famasce]

When a method doesn't return any value and simply changes the internal state
of an object, 'return self' is often used instead of 'return void' (and the
return type is changed accordingly). I've never reflected much on this, also
because it's a common practice in Swarm programs, but now I feel the need to
know: what's the advantage (if there's one) of returning self instead of
void?

Fabio.

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