Covering some basic topics I haven't seen elsewhere on Cody.
Return the class of the input variable.
Finding Perfect Squares
Back to basics 12 - Input Arguments
Return the first and last character of a string
Perfect Square or not
length of a vector
Back to basics 13 - Input variables
Back to basics 25 - Valid variable names
Back to basics 16 - byte order
Back to basics 26 - Keywords
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