[Rcpp-devel] changing a "const" argument

[Romain Francois]

Hmm. Not sure. Something to look for I guess.


The const and non const versions of the operator[] are identical:

inline Proxy operator[]( int i ){ return cache.ref(i) ; }
inline Proxy operator[]( int i ) const { return cache.ref(i) ; }

I'll have a look.

Romain

Le 16/11/12 15:00, Ramon Diaz-Uriarte a écrit :
> Dear All,
>
> I thought something like this would fail (would not compile):
>
>
> // [[Rcpp::export]]
> double changeAVector(const NumericVector a) {
>    a[0] = 3.0;
>    return 44.0;
> }
>
>
>
> But it does compile OK, and it really does modify the argument:
>
> d1 <- c(93, 99); changeAVector(d1); d1
>
>
> Is this expected?
>
>
> Thanks,
>
>
> R.
>


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