Test if arguments of the function are all variables (workspace variables names).
Return 1 if yes, 0 if no.
For example :
length!! and not "not isempty"... good point!
First non-zero element in each column
Specific Element Count
Doubling elements in a vector
How many digits are there?
Length of the hypotenuse
Mirror, mirror on the wall, who is fairest of them all?
Decrypt the cypher using XOR encryption (for beginners)
Pandigital number n°3 (Inspired by Project Euler 32)
Can you beat the lottery again (for hardcore coder) ?
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