java - RxJava- performing a peek() or void operation within an Observable chain? -

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java 8 lambda streams have peek() operator allows execute void operation on each item. typically used debugging, nice way cheat , kick off void operation without mapping something.

is there equivalent in rxjava? maybe i'm not following practice or thinking reactively enough... handy create status labels before , after operation? if peek() not supported, there better pattern follow?

observable<item> item= ...;  label statuslabel = new label(); label resultlabel = new label();  observable<calculateditem> calculateditem = calculated.subscribeon(schedulers.computation()) .peek(c -> statuslabel.settext("working..")) .map(c -> performexpensivecalculation(c)) .peek(r -> statuslabel.settext(""));  calculateditem.subscribe(c -> resultlabel.settext(c));

there method doonnext(action1<item> action) called each item in stream.

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