On Wed, Jan 29, 2020 at 14:39 ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote:
> On 2020-01-29 11:32, Trey Harris wrote: > > On Wed, Jan 29, 2020 at 13:50 ToddAndMargo via perl6-users > > <perl6-us...@perl.org <mailto:perl6-us...@perl.org>> wrote: > > > > Why don't use use > > > > typeMappings[type_index( typeid(char) )] = "char"; > > > > Finally, a definition I can work with... > > > > We can treat this as a request for typeid(); the mapping creation and > > lookup is an implementation detail. > > > > So: the C++ typeid operator works in two modes, static (which happens at > > compile-time and is inlined) and dynamic (which happens at runtime and > > is subject to polymorphism). Do you want the static or the dynamic > behavior? > > > I thought that was C not C++, but ... The `typeid` operator is C++. Some stdlib extensions have a `typeid` in C, but it’s non-standard. Also, your example given below is C++, not C. As variables in Raku get boxed and coerced > all the time, I guess I am asking for dynamic. In that case, you have it already as was mentioned much earlier. See https://gist.github.com/treyharris/0ce541c07a1f94b41af61207563e7807 with ```perl6 proto check_type($ --> Str) { * } multi check_type(uint $var) { return "uint" } multi check_type(Int $var) { return "Int" } my uint $ui = 42; say "Value is $ui"; # Value is 42 say check_type($ui); # uint say ".^name is {$ui.^name}"; # .^name is Int say check_type($ui); # uint # .abs autoboxes say check_type($ui.abs); # Int # abs() does not say check_type(abs $ui); # uint ``` Is that what you’re going for? > > I am after what the variable is at the moment I > ask. > > Is Raku written in C or C++? You can go to https://github.com/rakudo/rakudo and determine this for yourself—click the colored bar to see the language breakdown. (92.6% at the moment is written in Raku itself; it’s mostly a self-hosted language.) One of the guys on the C group wrote me this: That was C++, for the record.
