References to Functions

perl Live Demo Short URL - http://tpcg.io/m2XPwu

Circular References

perl Live Demo Short URL - http://tpcg.io/6NQj9Y

Reference

perl Live Demo Short URL - http://tpcg.io/r8gNdB

Dereferencing

perl Live Demo Short URL - http://tpcg.io/CvgiO6

Prior to Perl 5.10

perl Live Demo Short URL - http://tpcg.io/bHYOXO

State Variables via state()

perl Live Demo Short URL - http://tpcg.io/wABu1A

Temporary Values via local()

perl Live Demo Short URL - http://tpcg.io/LD1q67

Private Variables in a Subroutine

perl Live Demo Short URL - http://tpcg.io/No4H6N

Returning Value from a Subroutine

perl Live Demo Short URL - http://tpcg.io/rsWj04

Passing Hashes to Subroutines

perl Live Demo Short URL - http://tpcg.io/FgZsLn
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