@Vinnymac the distinction is that the `tap` proposed here is not called per-member, I think.
It has nothing _specifically_ to do with arrays (or iterables generally); they just happen to be the most common chaining targets. (See the example implementation from Bob Myers above). Because tap isn’t particular to arrays, I think this is a good example of something one of the proposed chain-oriented operators would be good for. That is, `::bind` (which should be called `::call` probably?) or the more general `|>` which unpacks nested calls into a linear readable chain.
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