Front page | perl.perl5.porters |
Postings from March 2022
On Fri, 11 Mar 2022, 09:42 Darren Duncan, <darren@darrenduncan.net> wrote: > On 2022-03-10 5:19 p.m., Yuki Kimoto wrote: > > I have a question. > > > > What means the scalar value is created as a number for JSON > serialization? > > > > # Created as a number > > my $num = 0; > > > > # Replace 0 with "0" > > $num =~ s/0/0/; > > # Is this result 0 or "0"? > > my $json_num = to_json $num; > > The result is absolutely certainly a string, because it is the result of a > regular expression, which is a string operation. > > Its logically the same as if you had said: > > my $num = ''.$num; > > So "0" is the result in $json_num. > Agreed. Fwiw The opposite outcome, forcing a value to be a number internally would be: $num = 0+$num; Although saying that I wonder what we do these days with $num += 0; I haven't checked but I hope the two produce the same outcome. Yuki you can check these things yourself by using Devel::Peek::Dump(). Just inspect the flags. Cheers, Yves >Thread Previous | Thread Next