List Comprehensions

[my-R-help]

Hi and thanks for your exciting package. I'm wondering whether it makes sense to add something like Python's list comprehensions to your vadr package. I know it's possible to do with the apply family of functions (or plyr) in R, but to me it seems that for many use cases, Python's list comprehensions come more natural and can be used in a more consistent way.

Anyway, I'm not sure whether this fits into the scope of the vadr package and what's your personal opinion on this, but since destructuring bind also reminds of of some very useful Python functionality, and since you seem to be doing a lot of computing on the language, I thought maybe this might be a good fit.