Additional cascading Map/Set/WeakMap methods?

Brendan Eich brendan at
Sun Jan 13 21:38:14 PST 2013

I have a couple of questions:

1. Isn't chaining now considered less-good style compared to a newer 
jQuery API that takes an object literal full of properties to add?

2. Is there any precedent for delete-chaining in any library?


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