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Postings from August 2021
On Mon, 30 Aug 2021 at 05:46, Yuki Kimoto <kimoto.yuki@gmail.com> wrote: > > 2021-8-27 21:08 Paul "LeoNerd" Evans <leonerd@leonerd.org.uk> wrote: > >> >> #!perl >> use v5.40; >> say "The reftype of arrays is ", reftype []; >> >> >> > There is one point I would like PSC to add to the discussion. > > Are all builtin functions imported to the "main" namespace? > No. That is the point of having a different namespace that is reserved for this purpose. Functions would be imported from the "builtin" namespace (whatever that might be) similarly to any other import. And in the shim logic they might imported into the builtin namespace for you, as well as optionally imported into your package. eg: consider: use builtin v5.32; # ensure that this perl has the builtin's necessary to similute 5.32's set of functions versus: use builtin v5.32 qw(whatever); # ensure that this perl has the builtin's necessary to simulate 5.32's functions, and import "whatever". The former would ensure that builtin::whatever would be available assuming it was part of 5.32's functions. The latter, would do the same but also export "whatever" into your namespace. The version might be mandatory, so that if you say: use builtin v5.32 qw(whatevr); # ensure that this perl has the builtin's necessary to simulate 5.32's functions, and try to import "whatevr". we can do an error message like one of the following: "Function "whatevr" is not a valid function from the v5.32 builtin namespace, this either means this function was introduced in a later version, or it means you have typoed the function name". "This person does not have the shim modules in place to support v5.32 builtin namespace, install the latest version of the "builtin" distribuition from CPAN" depending on whether their perl is newer than 5.32 or if they have the latest version of the builtin backcompat layer (however that might work in practice). cheers, Yves -- perl -Mre=debug -e "/just|another|perl|hacker/"Thread Previous | Thread Next