die
die message
Prints
message
to the standard error output and exits the Perl
program with a nonzero exit status.
message
can be a list value, like
the arguments to
print
, from which the elements are concatenated
into a single string for output. If
message
does not end with
a newline (
\n
), the current script filename, line number, and
input line number (if any) are appended to the message with a newline.
With no argument, the function outputs the string
Died
as its
default.
die
exits the programs with the current value of the
$!
variable, which contains the text describing the most recent operating
system error value. This value can be used in the
message
to
describe what the problem may have been.
die
behaves differently inside an
eval
statement. It
places the error message in the
$@
variable and aborts the
eval
, which returns an undefined value. This use of
die
can raise runtime exceptions that can be caught at
a higher level of the program.
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| Reference: delete |
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Reference: do |