Yorick (programming language)
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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.
Features
Indexing
Yorick is good at manipulating elements in N-dimensional arrays conveniently with its powerful syntax.
Several elements can be accessed all at once:
Arbitrary elements
Pseudo-index
Like "threading" in PDL and "broadcasting" in Numpy, Yorick has a mechanism to do this:
Rubber index
".." 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
Tensor multiplication is done as follows in Yorick:
means ∑ j = 1 j = N P i j k l Q m n j {\displaystyle \sum _{j=1}^{j=N}{P_{ijkl}Q_{mnj}}}