> From: Left Right [mailto:olegsivo...@gmail.com]
> Sent: 24 February 2012 11:10
> OMG!!! Seriously, you are writing SDK code and you don't know what's the
> difference between using `in' operator and calling a method defined on
> Object.prototype is?
Interesting. Seeing someone else by rude brings home to me why people didn't
like me doing it.
Left Right,
What are the benefits / disadvantages of
if (collection[item] !== undefined) ...
versus
if (item in collection) ...
The latter is easier on the eye, but does it have objective benefits (speed,
reliability etc)? I haven't tried it, but I suspect the former only works
properly if item is a string.
David.
