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RD> Perl has no proper boolean values. Instead, the boolean operators
RD> treat zero, undef, and the null string '' all as false. Anything else
RD> is true.

to be pedantic, '0' is also false. it isn't exactly the same as 0.


come again with that? how is:
$string = 0; #different from
$string = '0';

they both define $string as something, right?

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>>>>> "sw" == shawn wilson <ag4ve.us [at] gmail.com> writes:

RD> Perl has no proper boolean values. Instead, the boolean operators
RD> treat zero, undef, and the null string '' all as false. Anything else
RD> is true.

sw> to be pedantic, '0' is also false. it isn't exactly the same as 0.


sw> come again with that? how is:
sw> $string = 0; #different from
sw> $string = '0';

sw> they both define $string as something, right?

but they are different actual values. sure perl will convert from one to
the other but i have run into issues with 0 vs '0'. i am comparing
values from input data and from a db using json which stringifys its
values. but it does it differently for 0 and '0' which made the
comparisons fail. the module is checking the internal flags to see if
something is a string or an integer and encoding the json accordingly. i
had to force my string numbers to integers (by adding 0) to make it work
correctly.

and we aren't testing defined, but boolean. defined only checks for
undef.

uri

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