It is possible, but not easily, and not definitively. If you
die with an object (
v.5.6+) that is overloaded to return
undef in the appropriate contexts e.g
## warning - segfaults in 5.6.1
{
package UndefError;
use overload (
q[""] => sub { undef },
bool => sub { undef },
'0+' => sub { undef },
fallback => 1
);
sub new { bless [] }
}
eval {
die UndefError->new;
};
warn "ack - $@" if $@;
warn "object error - $@" if ref $@;
__output__
object error - at - line 19.
So it can be emulated in some respects, but only through very convoluted means :)
HTH
_________
broquaint
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.