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From: Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups: comp.lang.javascript
Subject: Re: Merge indexes..
Date: Thu, 21 May 2015 15:52:18 +0100
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jonas.thornvall@gmail.com writes:
<snip>
> Well Evertjan if your array hold and concatenate/merge more than 10
> digits, an integer won't hold them and you have problem with overflow?

Integers are unbounded and don't overflow.  ECMAScript uses floating
point to represent numbers and can store exact integers up to
9007199254740992 which is more than 10 digits.  Arrays of digits of any
length can be exactly concatenating in ECMAScript provided they have
enough leading zeros.

-- 
Ben.