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...irst step in changing the behaviour would be to issue a warning that the change is coming in a future version.) The protection for old code could be just a warning that can be turned off with a call to options. The new documentation should be more explicit. Regards, Jorgen. From: Mark Webster <markwebster204 at yahoo.co.uk> To: Jorgen Harmse <jharmse at roku.com>, Ivan Krylov <ikrylov at disroot.org> Cc: "r-help at r-project.org" <r-help at r-project.org> Subject: Re: [R] duplicated() on zero-column data frames returns empty Message-ID: <603481690.9150754.17125...

>?If you would like to try your hand at developing a patch and make a > case for it at R-devel or the Bugzilla, the resources at > <https://contributor.r-project.org/> can be helpful. I am attempting to get admitted onto the Bugzilla at the moment for the data frame cases, fingers crossed! Best Regards,Mark Webster [[alternative HTML version deleted]]

...the core team develops something more efficient than sort(unique(?)). Regards, Jorgen. ------------------------------ Message: 2 Date: Fri, 5 Apr 2024 11:17:37 +0300 From: Ivan Krylov <ikrylov at disroot.org> To: Mark Webster via R-help <r-help at r-project.org> Cc: Mark Webster <markwebster204 at yahoo.co.uk> Subject: Re: [R] duplicated() on zero-column data frames returns empty vector Message-ID: <20240405111737.2b7e4c3a at arachnoid> Content-Type: text/plain; charset="utf-8" Hello Mark, ? Fri, 5 Apr 2024 03:58:36 +0000 (UTC) Mark Webster via R-help <r-h...