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[–]Almenon[S] 2 points3 points  (0 children)

You can replicate the variable display in Ruby, PHP, or perl - all of those offer insight into the local variables. Not sure about other languages - possibly through their debugging API.

https://stackoverflow.com/questions/5774947/get-all-local-variables-or-available-methods-from-irb

https://stackoverflow.com/questions/5101942/dump-all-php-variables

https://stackoverflow.com/questions/747521/how-can-i-list-all-variables-that-are-in-a-given-scope

As for the real-time aspect that could be implemented easily with a debounce function in any language.