<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I’d like to try my hand at implementing this, if nobody else is interested. I should be able to have something up today.<br><br><div id="AppleMailSignature" dir="ltr">Brandt</div><div dir="ltr"><br>On Feb 27, 2019, at 11:05, João Matos <<a href="mailto:jcrmatos@gmail.com">jcrmatos@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div dir="ltr">
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Hello,<br>
<br>
Great.<br>
Because I don't program in any other language except Python, I can't
make the PR (with the C code).<br>
Maybe someone who program in C can help?<br>
<br>
Best regards,<br>
<br>
<pre class="moz-signature" cols="72">João Matos
</pre>
<div class="moz-cite-prefix">On 27-02-2019 18:48, Guido van Rossum
wrote:<br>
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<div dir="ltr" class="gmail_attr">On Wed, Feb 27, 2019 at
10:42 AM Michael Selik <<a href="mailto:mike@selik.org" moz-do-not-send="true">mike@selik.org</a>> wrote:<br>
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<div dir="ltr" class="gmail_attr">On Wed, Feb 27, 2019
at 10:22 AM Anders Hovmöller <<a href="mailto:boxed@killingar.net" target="_blank" moz-do-not-send="true">boxed@killingar.net</a>>
wrote:<br>
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<blockquote class="gmail_quote" style="margin:0px 0px
0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">I dislike the
asymmetry with sets:<br>
<br>
> {1} | {2}<br>
{1, 2}<br>
<br>
To me it makes sense that if + works for dict then
it should for set too. <br>
<br>
/ Anders<br>
<br>
> On 27 Feb 2019, at 17:25, João Matos <<a href="mailto:jcrmatos@gmail.com" target="_blank" moz-do-not-send="true">jcrmatos@gmail.com</a>>
wrote:<br>
> <br>
> Hello,<br>
> <br>
> I would like to propose that instead of using
this (applies to Py3.5 and upwards)<br>
> dict_a = {**dict_a, **dict_b}<br>
> <br>
> we could use<br>
> dict_a = dict_a + dict_b<br>
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<div><br>
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<div><br>
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The dict subclass collections.Counter overrides the
update method for adding values instead of overwriting
values.</div>
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<div class="gmail_quote"><a href="https://docs.python.org/3/library/collections.html#collections.Counter.update" target="_blank" moz-do-not-send="true">https://docs.python.org/3/library/collections.html#collections.Counter.update</a><br>
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<div class="gmail_quote"><br>
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<div class="gmail_quote">Counter also uses +/__add__ for
a similar behavior.<br>
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<div><br>
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<div>
<div> >>> c = Counter(a=3, b=1)</div>
<div> >>> d = Counter(a=1, b=2)</div>
<div> >>> c + d # add two counters
together: c[x] + d[x]</div>
</div>
<div> Counter({'a': 4, 'b': 3})</div>
<div><br>
</div>
<div>At first I worried that changing base dict would
cause confusion for the subclass, but Counter seems
to share the idea that update and + are synonyms.</div>
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</div>
<div>Great, this sounds like a good argument for + over |. The
other argument is that | for sets *is* symmetrical, while +
is used for other collections where it's not symmetrical. So
it sounds like + is a winner here.<br>
</div>
<div> </div>
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-- <br>
<div dir="ltr" class="gmail_signature">--Guido van Rossum (<a href="http://python.org/~guido" target="_blank" moz-do-not-send="true">python.org/~guido</a>)</div>
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