In the C++ bindings for HDF5, I can create a 1x4 H5::ArrayType made up
of doubles with an expression like
If I am just given array_type, how do I find out its underlying
H5::DataType (in this case IEEE_F64LE). The methods for the
H5::ArrayType class only give me a way to find out the size of the
array, but not the underlying type.