I am creating a module which takes various parameters, including coderefs. Since my module also does some internal cacheing of return values where parameters have been seen before, I am wondering if it's possible to 'stringify' a coderef in order work out if the module has seen it before. So for example: 
my $coderef = sub{ return "Hello"; };

# Possible somehow to manipulate $coderef
# here, to get back to the code itself?

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I presume the answer is no, and that the scalar value of the coderef - eg. CODE(0x225c2c) etc. - is just a memory location of no use in this context as it may be different if code is the same, or indeed the same even if the code is different.

My planned workaround is for the module to accept code as string values instead of coderefs, and then 'eval' them into coderefs inside the module, but this doesn't seem very elegant.

Is there a better way?

In reply to Converting a coderef back to code by oxone

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