How do we get the length of a variable in bytes?
I see the length function returns length in characters.
unless you (From perldoc -f length):
use "do { use bytes; length(EXPR) }"
Nothing there would seem to indicate it cannot be used to get the
length in characters or bytes of an array.
It does say:
. . . . . . . . . . . . . . . . . Note that this cannot be
used on an entire array or hash to find out how many elements
these have. For that, use "scalar @array" and "scalar keys
%hash" respectively.
But that doesn't appear to preclude using it to get the length in
characters. But apparently you cannot since this returns <1>.
my @ar = ("one,","two","three","four","five");
my $char = length @ar;
print "char<$char>\n"
char<1>
There is a reference right at the end that might be pointing at what I'm
looking for but I can't understand what it means:
. . . . . . . . . . . . . . . . . . . . . . . .To get the
length in bytes, use "do { use bytes; length(EXPR) }", see
bytes.
What is meant by `see bytes'? Since it appears in function
documentation it seems to indicate there is a function called `bytes'
or at least something in the FAQ.
But here, neither `perldoc -f' bytes nor `peldoc -q bytes' shows
anything.
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