title: How to subtract each element of an array from another array?
body: <p>I have two Numpy arrays A (n x 1) and B (m x 1) of different sizes. I want to subtract each element of B from all the elements of A. Thus the elements of the result matrix C (m x n) should be computed as <code>c(i,j) = A(i)-B(j)</code>. Is there any direct loop-less computation using Numpy?</p>