# Viewing submatrices¶

The following routines form light-weight ($$O(1)$$ storage space and construction time) objects which represent contiguous submatrices of a given matrix. In many ways, they are an object-oriented equivalent of the BLAS convention of representing a matrix via a pointer, a leading dimension, and its dimensions. Routines with a ‘Locked’ prefix return immutable views, whereas routines without the ‘Locked’ prefix insist that the data pointed to by the constructed view can be modified.