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| From | Miles Bader <miles@gnu.org> |
| Newsgroups | comp.lang.c++ |
| Subject | Re: Bug, feature or just accidental? |
| Date | Tue, 02 Aug 2011 19:29:08 +0900 |
| Organization | NEC Electronics |
| Lines | 26 |
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boltar2003@boltar.world writes: >>throw(1,2) is throw (1,2). The result of the expression 1,2 is 2. >> >>throw 1,2 is (throw 1),2. Here the result (2) is discarded. > > Fair enough, but I'm surprised it doesn't treat comma seperated values > as arguments in the same way as a function call would. The thing is that the parens are _not_ part of the "throw" statement (the syntax of throw is just "throw SOMETHING" -- note, no parens), they're just random parens that you can put around any expression. This is in contrast with a function-call, where the parens are an intrinsic part of the function-call syntax; the outermost pair of parens in a function call are "special", which allows a special interpretation of commas (directly) inside them. It's like writing "int a = 1 + (2,3);" which is really just the same as "int a = 1 + 3;". -Miles -- Laughter, n. An interior convulsion, producing a distortion of the features and accompanied by inarticulate noises. It is infectious and, though intermittent, incurable.
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Bug, feature or just accidental? boltar2003@boltar.world - 2011-08-02 08:49 +0000
Re: Bug, feature or just accidental? Ian Collins <ian-news@hotmail.com> - 2011-08-02 20:55 +1200
Re: Bug, feature or just accidental? boltar2003@boltar.world - 2011-08-02 10:21 +0000
Re: Bug, feature or just accidental? Miles Bader <miles@gnu.org> - 2011-08-02 19:29 +0900
Re: Bug, feature or just accidental? boltar2003@boltar.world - 2011-08-02 10:35 +0000
Re: Bug, feature or just accidental? Ian Collins <ian-news@hotmail.com> - 2011-08-02 22:42 +1200
Re: Bug, feature or just accidental? boltar2003@boltar.world - 2011-08-02 11:16 +0000
Re: Bug, feature or just accidental? Victor Bazarov <v.bazarov@comcast.invalid> - 2011-08-02 08:08 -0400
Re: Bug, feature or just accidental? boltar2003@boltar.world - 2011-08-02 12:40 +0000
Re: Bug, feature or just accidental? Victor Bazarov <v.bazarov@comcast.invalid> - 2011-08-02 08:59 -0400
Re: Bug, feature or just accidental? boltar2003@boltar.world - 2011-08-02 13:23 +0000
Re: Bug, feature or just accidental? Victor Bazarov <v.bazarov@comcast.invalid> - 2011-08-02 09:43 -0400
Re: Bug, feature or just accidental? boltar2003@boltar.world - 2011-08-02 13:53 +0000
Re: Bug, feature or just accidental? James Lothian <james@firstnamelastname.freeserve.co.uk> - 2011-08-03 07:49 +0100
Re: Bug, feature or just accidental? "Paul" <pchristor@yahoo.co.uk> - 2011-08-03 10:47 +0100
Re: Bug, feature or just accidental? Paavo Helde <myfirstname@osa.pri.ee> - 2011-08-02 15:43 -0500
Re: Bug, feature or just accidental? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-08-02 16:12 +0000
Re: Bug, feature or just accidental? Ian Collins <ian-news@hotmail.com> - 2011-08-02 22:32 +1200
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