How do I do map/element-wise operations?
I am looking for a way to apply a function to every element of a vector or matrix.
v = vector([2, 0, -3])
print(v)
w = sign(v)
print(w) # I want (1, 0, -1)
m = matrix([[1, 2], [3, 4]])
m = m**2
print(m) # I want [1, 4] [9, 16]How does this work?
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