lisa-lab/pylearn2 — pull request #654 by bartvm (2014-03-03 20:11:23+00:00)
Title: Index space dtypes

`IndexSpace` represent labels and hence should have an integer `dtype` property. This also allows casting between integer types (e.g. from `int64` to `int32`). The default `dtype` is `int64`, which is also the default for NumPy.