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Groups > comp.lang.python > #56561
| From | "Frank Millman" <frank@chagford.com> |
|---|---|
| Subject | Re: I am never going to complain about Python again |
| Date | 2013-10-10 13:44 +0200 |
| References | <52562ee3$0$2931$c3e8da3$76491128@news.astraweb.com> <l35o52$e68$1@ger.gmane.org> <52568B30.8040905@mrabarnett.plus.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.935.1381405510.18130.python-list@python.org> (permalink) |
"MRAB" <python@mrabarnett.plus.com> wrote in message news:52568B30.8040905@mrabarnett.plus.com... > On 10/10/2013 09:23, Frank Millman wrote: >> >> "Steven D'Aprano" <steve@pearwood.info> wrote in message >> news:52562ee3$0$2931$c3e8da3$76491128@news.astraweb.com... >>> Just came across this little Javascript gem: >>> >>> ",,," == Array((null,'cool',false,NaN,4)); >>> >>> => evaluates as true >>> >>> http://wtfjs.com/2011/02/11/all-your-commas-are-belong-to-Array >>> >>> I swear, I am never going to complain about Python again. >>> >> >> I am sure you know this, but for the record, Javascript has two equality >> operators, '==' and '==='. >> >> The double form attempts to coerce the left and right sides to the same >> type, the triple form does not. >> > Re "==", this page: > > http://php.net/manual/en/language.operators.comparison.php > > states: > > """If you compare a number with a string or the *comparison involves > numerical strings*, then each string is converted to a number and the > comparison performed numerically.""" (emphasis added) > > So they get coerced to numbers if they _look_ like numbers! > I just tested Steven's example. ",,," == Array((null,'cool',false,NaN,4)) evaluates to true ",,," === Array((null,'cool',false,NaN,4)) evaluates to false I did look at the article that Steven linked to, but it made my eyes glaze, so don't ask me to explain it. I am prepared to use up a few brain cells trying to improve my own programming, but not trying to understand someone else's 'wtf' moments! [1] Frank [1] Unless I have to maintain it, of course. I have been there before, and I have some dark memories!
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I am never going to complain about Python again Steven D'Aprano <steve@pearwood.info> - 2013-10-10 04:36 +0000
Re: I am never going to complain about Python again Chris Angelico <rosuav@gmail.com> - 2013-10-10 15:50 +1100
Re: I am never going to complain about Python again Chris Rebert <clp2@rebertia.com> - 2013-10-09 22:26 -0700
Re: I am never going to complain about Python again Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-10-10 06:39 +0100
Re: I am never going to complain about Python again Christian Gollwitzer <auriocus@gmx.de> - 2013-10-10 08:41 +0200
Re: I am never going to complain about Python again "Frank Millman" <frank@chagford.com> - 2013-10-10 10:23 +0200
Re: I am never going to complain about Python again MRAB <python@mrabarnett.plus.com> - 2013-10-10 12:10 +0100
Re: I am never going to complain about Python again Tim Chase <python.list@tim.thechases.com> - 2013-10-10 06:43 -0500
Re: I am never going to complain about Python again "Frank Millman" <frank@chagford.com> - 2013-10-10 13:44 +0200
Re: I am never going to complain about Python again Roy Smith <roy@panix.com> - 2013-10-10 09:09 -0400
Re: I am never going to complain about Python again Neil Cerutti <neilc@norwich.edu> - 2013-10-10 15:51 +0000
Re: I am never going to complain about Python again Rotwang <sg552@hotmail.co.uk> - 2013-10-10 16:57 +0100
Re: I am never going to complain about Python again MRAB <python@mrabarnett.plus.com> - 2013-10-10 17:10 +0100
Re: I am never going to complain about Python again Neil Cerutti <neilc@norwich.edu> - 2013-10-10 17:48 +0000
Re: I am never going to complain about Python again Ian Kelly <ian.g.kelly@gmail.com> - 2013-10-10 12:35 -0600
Re: I am never going to complain about Python again Neil Cerutti <neilc@norwich.edu> - 2013-10-10 18:49 +0000
Re: I am never going to complain about Python again Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-10-10 20:47 +0100
Re: I am never going to complain about Python again Neil Cerutti <neilc@norwich.edu> - 2013-10-10 19:54 +0000
Re: I am never going to complain about Python again Cameron Simpson <cs@zip.com.au> - 2013-10-11 08:52 +1100
Re: I am never going to complain about Python again Roy Smith <roy@panix.com> - 2013-10-10 20:07 -0400
Is this the room for an argument? John Ladasky <john_ladasky@sbcglobal.net> - 2013-10-10 21:26 -0700
Re: Is this the room for an argument? Roy Smith <roy@panix.com> - 2013-10-11 09:49 -0400
Re: I am never going to complain about Python again Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-10-11 02:23 +0000
Re: I am never going to complain about Python again Neil Cerutti <neilc@norwich.edu> - 2013-10-11 12:31 +0000
Re: I am never going to complain about Python again Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-10-10 20:09 -0400
Re: I am never going to complain about Python again Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-10-11 02:08 +0000
Re: I am never going to complain about Python again Joshua Landau <joshua@landau.ws> - 2013-10-11 09:17 +0100
Re: I am never going to complain about Python again Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-10-11 09:11 +0000
Re: I am never going to complain about Python again Chris Angelico <rosuav@gmail.com> - 2013-10-11 20:52 +1100
Re: I am never going to complain about Python again Joshua Landau <joshua@landau.ws> - 2013-10-11 17:56 +0100
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