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Postings from March 2022
2022-3-11 10:50 Dan Book <grinnz@gmail.com> wrote: > On Thu, Mar 10, 2022 at 8:42 PM 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. >> > > To add: it is about the value being created as a string or a number, not a > variable. The result of a s///, or any string or numeric operation, is a > new value. > > -Dan > Darren, Dan, Yves Thank you for telling me the difference between a variable and a value. I have another question. If the two "created_as_number" and "is_number" functions existed, what cases would the two functions return the different results?Thread Previous | Thread Next