Things you can do with Hashes!
This lesson will let you practice some imporant functions to perform with hashes.
The main purpose of a Hash is being able to look up a value by a key.
However, here are a few other things you can do with Hashes, too.
Everyday Hash Functions
Again, look at them, and play with them in irb. Don’t necessarily put too
much effort into memorizing all of them…
merge:
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