I often need to retrieve number of samples or features of a given ExpressionSet. I use constructs like
dim(es)[], and just to make my code easier to read I wrapped it into functions, so that I can call it like
nSamples(es). Hence two questions:
1) Maybe there's already a function for that?
2) if not, is it a good practice to use
dim() for that purpose, or I should call something else?