Thanks for the tip! This might be useful to data analysis tools.
On Wed, Feb 12, 2020 at 11:01 AM Brad Gilbert <b2gi...@gmail.com> wrote: > If you want to find out if two variables are bound to the same data, there > is an operator for that > > my $a = 3; > my $b = 3; > say $a =:= $b; # False > > my $c := $b; > say $b =:= $c; # True > > On Wed, Feb 12, 2020 at 7:27 AM Aureliano Guedes < > guedes.aureli...@gmail.com> wrote: > >> Thank you. >> >> So, I'd like to find a way to test if two variables are bound or not, >> especially concerning their memory address. >> >> If the address is not fixed for a lifetime, I must be able to test it in >> just one cycle. >> > $a.WHERE == $b.WHERE # I expected FALSE >> True >> >> To a bound variable, I expect the same address, but to an unbounded >> variable, this garbage collector behavior seams assing to the same memory >> location two unbounded variables with the same value. It is right? Must >> reduce memory usage but is a quiet weirdo. >> >> On Wed, Feb 12, 2020 at 10:13 AM Elizabeth Mattijsen <l...@dijkmat.nl> >> wrote: >> >>> >>> >>> > On 12 Feb 2020, at 13:44, Aureliano Guedes <guedes.aureli...@gmail.com> >>> wrote: >>> > >>> > What "WHERE" should return? >>> > >>> > I was trying to find a method to return the memory address of some >>> data. >>> > Then I find the WHERE statement. >>> > https://rosettacode.org/wiki/Address_of_a_variable#Perl_6 >>> > https://docs.perl6.org/language/mop#WHERE >>> >>> Please note that the memory address is *NOT* fixed for the lifetime of >>> an object. Garbage collection may move it to another memory location at >>> *any* time. I've therefore adapted the documentation of .WHERE to: >>> >>> Returns an C<Int> representing the memory address of the object. Please >>> note >>> that in the Rakudo implementation of Raku, and possibly other >>> implementations, >>> the memory location of an object is B<NOT> fixed for the lifetime of the >>> object. So it has limited use for applications, and is intended as a >>> debugging >>> tool only. >>> >>> https://github.com/Raku/doc/commit/3e6270d197 >> >> >> >> -- >> Aureliano Guedes >> skype: aureliano.guedes >> contato: (11) 94292-6110 >> whatsapp +5511942926110 >> > -- Aureliano Guedes skype: aureliano.guedes contato: (11) 94292-6110 whatsapp +5511942926110
