W3C home > Mailing lists > Public > public-xformsusers@w3.org > April 2019

Re: ACTION-2244: Remove the term deep copy

From: Steven Pemberton <steven.pemberton@cwi.nl>
Date: Tue, 02 Apr 2019 12:20:27 +0200
To: "Erik Bruchez" <ebruchez@orbeon.com>
Cc: XForms <public-xformsusers@w3.org>, "XForms Users Community Group Issue Tracker" <sysbot+tracker@w3.org>
Message-ID: <op.zzl60dtmsmjzpq@steven-xps>
On Mon, 01 Apr 2019 20:13:00 +0200, Erik Bruchez <ebruchez@orbeon.com>  
wrote:

>> Insert talks all the time about a node that is cloned. Should that be  
>> an *item* that is cloned?
>
> I don't think it makes sense to "clone" items since the "identity of  
> atomic values, by >contrast, is determined solely by their intrinsic  
> properties.
Well, since we don't say what 'clone' means, it could just as well apply  
to atomic values; we just say what it means.

> No two distinct integers, for example, have the same value; every  
> instance of the value “5” as >an integer is identical to every other  
> instance of the value “5” as an integer.".
>
> However, we do need to say what `<insert>` does with atomic values.

Exactly.

Perhaps we should do away with 'clone', and just say "is copied".

So
    "Each node in the origin-sequence is cloned in the order it appears in  
the sequence."
should read
    "Each item in the origin-sequence is copied in the order it appears in  
the sequence."

Followed by a description of what "copied" means.

Steven

> They are eventually converted to text nodes. For example:
>
>    <insert context="foo" origin="5"/>
>
> should yield:
>
>    <foo>5</foo>
>
> The following:
>
>    <insert context="foo" origin="1 to 5"/>
>
> might yield, as would `<xsl:value-of>`:
>
>    <foo>1 2 3 4 5</foo>
>
> XSLT has a whole section on how sequences are produced. See [1] and [2].  
> When combining items >in a sequence, the default separator is the single  
> space, but XSLT makes this configurable with >a `separator` attribute.
>
> -Erik
>
> [1] https://www.w3.org/TR/xslt-30/#element-value-of
> [2] https://www.w3.org/TR/xslt-30/#constructing-simple-content
Received on Tuesday, 2 April 2019 10:20:59 UTC

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