Most of the time ref() will do but here is also blessed() in Scalar::Util that does there same as ref() for objects but returns undef for references to unblessed things.

Condider also if you'd be better off using UNIVERSAL::isa which given an object and a package tells you if the object can be treated as being of the class defined by that package (including any subclasses).

In reply to Re^2: How do I query the package name of an object? by nobull
in thread How do I query the package name of an object? by nmerriweather

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