greetings, Daniel. true. 'next' works.

> You can't easily go backwards, but skipping to the next is
> as easy as saying `next'.

on the other hand, and as your reference 'cannot easyily go backwards',
'next' forgets current object unless any variable on outside of the
yieldee block.

how about writing a special yielder like as below ..

    any-enumerable-object.sliding_each do |prev,this,next|
      ...
    end

 - could be really useful?
 - any other good name?

/void/3d/universe/milky-way-galaxy/orion-arm/sol-solar-system/3rd-planet/fareast/jp/tky/shigetomi.takuhiko.5618