package in enclosed block

[newtan]

Hello,

What's the advantage of having a "helper" package declaration enclosed
in a block?

file My/Gardener.pm

{
package My::Helper;
. . .
}

package My::Gardner;

use My::Helper;

.. . .

vs no enclosed block

file My/Gardener.pm

package My::Helper;
.....

package My::Gardener;
use My::Helper;

......

Thanks

 

[Anno Siegel]

Hello,

What's the advantage of having a "helper" package declaration enclosed
in a block?

file My/Gardener.pm

{
package My::Helper;
. . .
}

package My::Gardner;

use My::Helper;

. . .

vs no enclosed block

file My/Gardener.pm

package My::Helper;
....

package My::Gardener;
use My::Helper;

With the code shown there is no advantage. Why do you ask?

Anno

 

[tan.dalat]

With the code shown there is no advantage. Why do you ask?

I was just curious as I've seen code as described. Thanks for the
google reply tip otherwise, I'd be ripped apart by the posting cops .

 

[Anno Siegel]

I was just curious as I've seen code as described.

Sure, it is done quite frequently. I can think of three reasons:

- You want a scope for lexical variables

- You want to fall back to the package the was in force before
the block

- You want the package code run at compile time, so need a BEGIN
block around it.

None of these apply to the code shown.

Anno

 

[Brian McCauley]

Sure, it is done quite frequently. I can think of three reasons:

- You want a scope for lexical variables

Or for lexically scoped declarations of package variables (using
our()).