Moarvm is the Perl6 Virtual Machine that is one of the targets Rakudo compiles to (the JVM is another).
Basically at the moment when people talk about Perl6 that mostly mean Perl6 compiled with Rakudo running on MoarVM. (As I understand it). the dd bit was not in the example as part of string -> int conversion but to demonstrate the result. On Tue, 7 Aug 2018 at 08:32 ToddAndMargo <toddandma...@zoho.com> wrote: > >> On Tue, 7 Aug 2018, 08:16 ToddAndMargo, <toddandma...@zoho.com > >> <mailto:toddandma...@zoho.com>> wrote: > >> > >> Hi All, > >> > >> I am confused. > >> > >> This line will convert a string into an integer, but > >> will print out and extra line with "(Int)" on it: > >> > >> $ p6 'my Str $x = "5"; my Int $y = dd +$x; say $y' > >> 5 > >> (Int) > >> > >> > >> This will convert as well, but no extra line: > >> > >> $ p6 'my Int $x; my Str $y = "5"; $x = "$y" + 0; say $x' > >> 5 > >> > >> > >> Also, I can quote $x, and it still works: > >> > >> $ p6 'my Int $x; my Str $y = "5"; $x = "$y" + 0; say "$x"' > >> 5 > >> > >> > >> But this tells me I have an uninitialized value, when all > >> I did was add quotes around $y, as in the above line. > >> > >> $ p6 'my Str $x = "5"; my Int $y = dd +$x; say "$y";' > >> 5 > >> Use of uninitialized value $y of type Int in string context. > >> Methods .^name, .perl, .gist, or .say can be used to stringify > >> it to something meaningful. > >> > >> > >> Why would I want to use "dd"? > >> > >> Many thanks, > >> -T > >> > > On 08/07/2018 12:19 AM, Simon Proctor wrote: > > dd is the moarvm specific data dump command. You don't need it. > > > > -- > > Simon Proctor > > Cognoscite aliquid novum cotidie > > Thank you! > > What is "moarvm" > -- Simon Proctor Cognoscite aliquid novum cotidie
