Rcpp Version 0.12.12
lapply.h
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1 // -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
2 //
3 // lapply.h: Rcpp R/C++ interface class library -- lapply
4 //
5 // Copyright (C) 2010 - 2011 Dirk Eddelbuettel and Romain Francois
6 //
7 // This file is part of Rcpp.
8 //
9 // Rcpp is free software: you can redistribute it and/or modify it
10 // under the terms of the GNU General Public License as published by
11 // the Free Software Foundation, either version 2 of the License, or
12 // (at your option) any later version.
13 //
14 // Rcpp is distributed in the hope that it will be useful, but
15 // WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 // GNU General Public License for more details.
18 //
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20 // along with Rcpp. If not, see <http://www.gnu.org/licenses/>.
21 
22 #ifndef Rcpp__sugar__lapply_h
23 #define Rcpp__sugar__lapply_h
24 
25 namespace Rcpp{
26 namespace sugar{
27 
28 template <int RTYPE, bool NA, typename T, typename Function>
29 class Lapply : public VectorBase<
30  VECSXP ,
31  true ,
32  Lapply<RTYPE,NA,T,Function>
33 > {
34 public:
36  typedef typename ::Rcpp::traits::result_of<Function>::type result_type ;
37 
38  Lapply( const VEC& vec_, Function fun_ ) :
39  vec(vec_), fun(fun_){}
40 
41  inline SEXP operator[]( R_xlen_t i ) const {
42  return Rcpp::wrap( fun( vec[i] ) );
43  }
44  inline R_xlen_t size() const { return vec.size() ; }
45 
46 private:
47  const VEC& vec ;
49 } ;
50 
51 } // sugar
52 
53 template <int RTYPE, bool NA, typename T, typename Function >
57 }
58 
59 } // Rcpp
60 
61 #endif
R_xlen_t size() const
Definition: VectorBase.h:49
Function_Impl< PreserveStorage > Function
Definition: Function.h:114
sugar::Lapply< RTYPE, NA, T, Function > lapply(const Rcpp::VectorBase< RTYPE, NA, T > &t, Function fun)
Definition: lapply.h:55
SEXP operator[](R_xlen_t i) const
Definition: lapply.h:41
R_xlen_t size() const
Definition: lapply.h:44
Lapply(const VEC &vec_, Function fun_)
Definition: lapply.h:38
const VEC & vec
Definition: lapply.h:47
::Rcpp::traits::result_of< Function >::type result_type
Definition: lapply.h:36
SEXP wrap(const Date &date)
Definition: Date.h:38
Rcpp API.
Definition: algo.h:28
Rcpp::VectorBase< RTYPE, NA, T > VEC
Definition: lapply.h:35
Function fun
Definition: lapply.h:48