#%^H

The %^H hash provides the same scoping semantic as $^H. This makes it useful for implementation of lexically scoped pragmas. See perlpragma.

When putting items into %^H, in order to avoid conflicting with other users of the hash there is a convention regarding which keys to use. A module should use only keys that begin with the module's name (the name of its main package) and a "/" character. For example, a module Foo::Bar should use keys such as Foo::Bar/baz.

This variable was added in Perl 5.6.

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