Re^2: $@ alternative

I don't know :-(. And he did't answer. Can i add

{
    local $@;
...my code goes here...
}
[download]

to preserve $@?

Comment on Re^2: $@ alternative Download Code

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Re^3: $@ alternative by sgt (Deacon) on Sep 10, 2007 at 08:30 UTC
$@ is global, so yes you can localize it, (and in general you should make a local copy if you want to preserve a previous exception). $@ being global, at the first exception triggered the previous contents of $@ will be destoyed, so that means probably your customer never used exception-eval blocks, or was just lucky, as the following code demonstrates. `% steph@ape (/home/stephan/r) % % perl -we '$@ = "customer stuff..."; eval { die "dont muck with $@!" +}; print $@' dont muck with ! at -e line 1. % steph@ape (/home/stephan/r) % % perl -we '$@ = "customer stuff..."; { local $@; eval { die "dont muc +k with $@!" }; } print $@' customer stuff...` [download] cheers --stephan	[reply] [d/l]

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Re^3: $@ alternative
by sgt (Deacon) on Sep 10, 2007 at 08:30 UTC

$@ is global, so yes you can localize it, (and in general you should make a local copy if you want to preserve a previous exception).

$@ being global, at the first exception triggered the previous contents of $@ will be destoyed, so that means probably your customer never used exception-eval blocks, or was just lucky, as the following code demonstrates.


% steph@ape (/home/stephan/r) %
% perl -we '$@ = "customer stuff..."; eval { die "dont muck with $@!" 
+}; print $@'
dont muck with ! at -e line 1.

% steph@ape (/home/stephan/r) %
% perl -we '$@ = "customer stuff..."; { local $@; eval { die "dont muc
+k with $@!" }; } print $@'
customer stuff...
[download]

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[d/l]