Covering some basic topics I haven't seen elsewhere on Cody.
Return the class of the input variable.
Sums with Excluded Digits
Matrix indexing with two vectors of indices
The Answer to Life, the Universe, and Everything
Sum the numbers on the main diagonal
Sum the 'edge' values of a matrix
Back to basics 10 - Max Float
Back to basics 8 - Matrix Diagonals
Back to basics 23 - Triangular matrix
Back to basics 15 - Benchmark
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