Covering some basic topics I haven't seen elsewhere on Cody.
Return the class of the input variable.
Reverse the vector
Back to basics 25 - Valid variable names
Check if number exists in vector
Determine the square root
2 b | ~ 2 b
Back to basics 1 - Saving
Back to basics 14 - Keywords
Back to basics 18 - justification
Back to basics 10 - Max Float
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