Yorick is an interpreted programming language designed for numerics, graph plotting, and steering large scientific simulation codes. It is quite fast due to array syntax, and extensible via C or Fortran routines. It was created in 1996 by David H. Munro of Lawrence Livermore National Laboratory.

Yorick is good at manipulating elements in N-dimensional arrays conveniently with its powerful syntax.

Several elements can be accessed all at once:

Like "theading" in PDL and "broadcasting" in Numpy, Yorick has a mechanism to do this:

".." is a rubber-index to represent zero or more dimensions of the array.

"*" is a kind of rubber-index to reshape a slice(sub-array) of array to a vector.

Tensor multiplication is done as follows in Yorick:

means ${\displaystyle \sum _{j=1}^{j=N}{P_{ijkl}Q_{mnj}}}$