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Select or download this
```
$ cat MyClass.pm
```
Select or download this
```
use strict;
use warnings;
...
};

1;
```
Select or download this
```
$ cat script.pl
```

use lib '.';
use MyClass;
...
$bar = foo;

print "$bar\n";

Select or download this
```
$ perl script.pl
```
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```
42
```
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```
$ cat MyClass2.pm
```
Select or download this
```
use strict;
use warnings;
...
};

1;
```
Select or download this
```
$ cat script2.pl
```

Select or download this

use lib '.';
use MyClass2;
...
$bar = foo;

print "$bar\n";

Select or download this
```
$ perl script2.pl
```

Select or download this

Global symbol "$bar" requires explicit package name (did you forget to
+ declare "my $bar"?) at script2.pl line 4.
Global symbol "$bar" requires explicit package name (did you forget to
+ declare "my $bar"?) at script2.pl line 6.
Execution of script2.pl aborted due to compilation errors.