Re: () eq () vs () = ()

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Subject: Re: () eq () vs () = ()
From: Michael Kay <mike@xxxxxxxxxxxx>
Date: Sat, 01 Oct 2011 22:02:11 +0100

On 01/10/2011 17:01, Andrew Welch wrote:

deep-equal(A, B) means (count(A) eq count(B) and every $i in 1 to count(A)
satisfies A[$i] eq B[$i]). Therefore deep-equal((), ()) is true.

Is it fair to say deep-equal could mean:

every $i in 1 to max((count(A), count(B))) satisfies A[$i] eq B[$i]

which would then return false, as its only the length check that is
causing it to return true (and thats only there to avoid also checking
every item in B is equal to A)

That works for atomic values (with the exception of NaN) but not for nodes (my mistake in my last post!). Using XQuery notation:

<a>3</a> eq <b>3</b> is true

deep-equal(<a>3</a>, <b>3</b>) is false

Michael Kay
Saxonica

Current Thread
Re: () eq () vs () = () Andrew Welch - 1 Oct 2011 16:02:06 -0000 Michael Kay - 1 Oct 2011 19:47:44 -0000 Michael Kay - 1 Oct 2011 21:02:22 -0000 <= Sam Wilmott - 2 Oct 2011 22:36:59 -0000 Brandon Ibach - 3 Oct 2011 10:11:33 -0000 Andrew Welch - 3 Oct 2011 10:27:24 -0000 Brandon Ibach - 3 Oct 2011 10:57:09 -0000

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Re: () eq () vs () = (), Michael Kay	Thread	Re: () eq () vs () = (), Sam Wilmott
Re: How to select a node base, Peng Yu	Date	Thank you, Mark
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