I think there is a problem with the test or tests, since even the default solution fails to evaluate with 'Parse error' indicated.
I agree. Function names cannot start with numbers, so this problem should be revised.
The server encountered an error while evaluating the solution.
Replace NaNs with the number that appears to its left in the row.
Return the first and last character of a string
Vectors counting by 2
Bottles of beer
Back to basics 21 - Matrix replicating
Back to basics 6 - Column Vector
Back to basics 23 - Triangular matrix
Back to basics 2 - Function Path
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