I was already looking into something similar so I checked my dataset of scripts
from 2235 sites and found only one example of duplicate identifier names:
vnexpress.net. Here's the decl
function
GetTopicHTML(sId,sTitle,sDate,sPath,sType,sPath,arItem,vType1,vType2,vCustomTitle,vShowHeader){
Notice sPath is duplicated. However, sPath is subsequently never used at all,
so I'm not sure what the intent was here. Possibly just a bug or cruft.
That said, _ is being used to ignore parameters on 36 sites. Most commonly this
is jQuery library usage (ignoring the first index parameter of forEach, for
example) but a good number of other examples exist. I can provide more details
if people are interested.
> -----Original Message-----
> From: [email protected] [mailto:es-discuss-
> [email protected]] On Behalf Of Brendan Eich
> Sent: Saturday, December 29, 2012 7:10 PM
> To: Domenic Denicola
> Cc: Mark S. Miller; [email protected]
> Subject: Re: excluding features from sloppy mode
>
> Domenic Denicola wrote:
> > Duplicate parameters are quite common in the following case:
> >
> > callSomething(function (_, _, whatIActuallyCareAbout) {});
>
> I've never seen that in JS. In ML, sure.
>
> Have you any links to cite?
>
> /be
>
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