RcppCore/RcppArmadillo — pull request #26 by romainfrancois (2014-11-19 19:49:52+00:00)
Title: support attempt for as<field<...>>

This is related to this http://stackoverflow.com/questions/27004232/using-fields-within-rcpparmadillo

With this I get:

```
$ RcppScript /tmp/arma.cpp

> direct_sum(list(matrix(1:16, nc = 4), matrix(1:16,
+ nc = 4)))
[,1] [,2]
[1,] 4 4
[2,] 4 4
```