mat2list command

[massimo]

Assign it to a "L" variable:

L3:=mat2list([[1,2],[3,4]])

Not very elegant, indeed.

Why not use some recursion in a CAS function?

lc(a):=PIECEWISE((length(a)) = 0,{},(length(a))>0,concat({head(a)},lc(tail(a))))

lc([a b c]) returns {a b c}

I like functional languages! BTW this is a classic example of tail recursion. Many functional languages translate it to a loop. It will be nice to know which is the CAS behavior.