Taking the points from both replies, I summarize the following given below.
In the example 1,
The variable $main::pet is never declared. But, the typeglob assignment made it as an alias for $Zoo:pet which
has indeed been declared with our. So 'use strict' didn't throw error since somehow $main::pet got indirectly declared.
In the example 2,
Here too, the variable $main::pet is never declared. The symbolic assignment just created $main::pet.
So 'use strict' threw error since it could not find any declaration for $main::pet either direct or indirect.
Any other explanation that better explain the behavior?
- GG1985
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