Re: Try::Tiny - return in catch from sub

The doc for that module says it supports a return from the "try" block, doesn't mention the "catch" block - you could try setting a flag inside the catch (defined at the sub level) and return if that flag is set e.g.

sub foo {
   my $error = 0;
   try {
      die;
   }
   catch {
      print "error\n";
      $error = 1;
   }
   return if $error;
   print "no_err\n";
}
[download]

I agree from a program flow point-of-view, it would be better if the return inside the catch worked as expected - it may be that the "catch" is itself similar to a sub, and the return is returning from that?

Comment on Re: Try::Tiny - return in catch from sub Download Code

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Re^2: Try::Tiny - return in catch from sub by Anonymous Monk on Nov 26, 2010 at 15:03 UTC
um, it says what try returns, what catch returns ... see this example `try { die_sometimes(); } catch { # ...code run in case of error } finally { if (@_) { print "The try block died with: @_\n"; } else { print "The try block ran without error.\n"; } };` [download] if you want to return from your sub from within a try/catch then use as directed `use TryCatch; sub foo { my ($self) = @_; try { die Some::Class->new(code => 404 ) if $self->not_found; return "return value from foo"; } catch (Some::Class $e where { $_->code > 100 } ) { } }` [download] Try::Tiny is for when TryCatch is too much, it is not a drop in replacement, mind the caveats	[reply] [d/l] [select]
Re^3: Try::Tiny - return in catch from sub by mjscott2702 (Pilgrim) on Nov 26, 2010 at 15:34 UTC
um, not in the CPAN documentation: This module provides bare bones try/catch/finally statements that are designed to minimize common mistakes with eval blocks, and NOTHING else. This is unlike TryCatch which provides a nice syntax and avoids adding another call stack layer, and supports calling return from the try block to return from the parent subroutine.	[reply]
Re^4: Try::Tiny - return in catch from sub by Anonymous Monk on Nov 27, 2010 at 10:35 UTC
That says Try::Tiny does not support returning from try/catch/finally blocks like TryCatch, its how they're different	[reply]


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