Vectors

•   (build-vector n f) creates a vector with n elements. The elements are initialized by calling f on each element index. The elements will be initialized in order from 0 to n-1.
•   (tabulate n f) is equivalent to (build-vector n f).
•   (foreach! v f) applies f to each element of the vector v and sets the same vector element to the result. The f procedure is called with two arguments: the original vector element and the position of the element in the vector.
•   (2vector l) creates a two dimensional vector from a list of lists l.
•   (2make-vector m n) creates an m x n matrix, initialized with #<void>.
•   (2vector-init m n f) creates an m x n matrix, initialized by calling f with the indicies of each matrix element.
•   (2vector-ref t i j) extracts the (i, j) component from the matrix t.
•   (2vector-set! t i j v) sets the (i, j) component from the matrix t to v.
•   (2foreach! t f) applies f to each element of the matrix t and sets the same matrix element to the result. The f procedure is called with three arguments: the original matrix element and the position indicies of the element in the matrix.
•   (2vector-print t vprint) prints the matrix t by calling vprint on each column of the matrix. Each column is passed to vprint as a vector.