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Groups > comp.lang.c++ > #71118
| From | Ike Naar <ike@sdf.lonestar.org> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: std::copy with std::ostream_iterator<std::array...> |
| Date | 2020-01-04 21:46 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <slrn3flsr121tl.4k8.ike@sdf.lonestar.org> (permalink) |
| References | <qukdjv$fco$1@dont-email.me> |
On 2020-01-02, Ralf Goertz <me@myprovider.invalid> wrote:
> struct Foo {
> int i,j;
> bool operator<(const struct Foo &r) const { //needed for set
> if (i<r.i) return true;
> return j<r.j;
This looks suspect.
Do you want (2,1) to be less than (1,2) ?
if you want to define a lexicographical order on (i,j), the comparison should be
return i<r.i || (i==r.i && j<r.j);
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std::copy with std::ostream_iterator<std::array...> Ralf Goertz <me@myprovider.invalid> - 2020-01-02 10:37 +0100
Re: std::copy with std::ostream_iterator<std::array...> Paavo Helde <myfirstname@osa.pri.ee> - 2020-01-02 12:27 +0200
Re: std::copy with std::ostream_iterator<std::array...> Bo Persson <bo@bo-persson.se> - 2020-01-02 12:26 +0100
Re: std::copy with std::ostream_iterator<std::array...> Ralf Goertz <me@myprovider.invalid> - 2020-01-02 16:10 +0100
Re: std::copy with std::ostream_iterator<std::array...> James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-01-02 23:13 -0500
Re: std::copy with std::ostream_iterator<std::array...> Ralf Goertz <me@myprovider.invalid> - 2020-01-03 07:49 +0100
Re: std::copy with std::ostream_iterator<std::array...> James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-01-03 08:30 -0500
Re: std::copy with std::ostream_iterator<std::array...> Bo Persson <bo@bo-persson.se> - 2020-01-03 15:09 +0100
Re: std::copy with std::ostream_iterator<std::array...> Ike Naar <ike@sdf.lonestar.org> - 2020-01-04 21:46 +0000
Re: std::copy with std::ostream_iterator<std::array...> Ralf Goertz <me@myprovider.invalid> - 2020-01-05 16:06 +0100
Re: std::copy with std::ostream_iterator<std::array...> Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-01-05 18:24 +0000
Re: std::copy with std::ostream_iterator<std::array...> Öö Tiib <ootiib@hot.ee> - 2020-01-05 10:56 -0800
Re: std::copy with std::ostream_iterator<std::array...> Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-01-05 19:55 +0000
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