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From: Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups: comp.lang.javascript
Subject: Re: General compute language, syntax question
Date: Mon, 29 Feb 2016 15:11:27 +0000
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jonas.thornvall@gmail.com writes:
<snip>
> I mean how utterly fucking stupid must one be to come up with a
> solution that require the programmer to check if the array[index] is
> empty what index? Index for 0 it doesn't exist? Or do they require me
> to loop thru an empty list how do you do that?

It's possible that you are using the wrong data type for the job (an
array is very different from a list, so if you need a list an array
might be a bad fit).

Anyway, if you are using the new ECMAScript you might find that

  !array.some(() => true)

does what you want or even (depending on how you handle deleted
elements) the much cheaper array.length == 0.  For example, if you use
push/pop/ shift/unshift to add and remove elements you'll find an
empty "list" has length zero.

-- 
Ben.