diff --git a/inst/include/EigenH5.h b/inst/include/EigenH5.h
index 7d93963..f9494cf 100644
--- a/inst/include/EigenH5.h
+++ b/inst/include/EigenH5.h
@@ -4,11 +4,6 @@
 #include <complex>
 #include <iostream>
 #include <range/v3/core.hpp>
-#include <range/v3/view/iota.hpp>
-#include <range/v3/view/take.hpp>
-#include <range/v3/view/reverse.hpp>
-#include <range/v3/view/any_view.hpp>
-#include <range/v3/utility/copy.hpp>
 #include <highfive/H5DataSet.hpp>
 #include <highfive/H5Filter.hpp>
 #include <highfive/H5DataSpace.hpp>
diff --git a/inst/include/EigenH5_RcppExports.h b/inst/include/EigenH5_RcppExports.h
index 8b36a00..2f3f97c 100644
--- a/inst/include/EigenH5_RcppExports.h
+++ b/inst/include/EigenH5_RcppExports.h
@@ -40,7 +40,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
     }
 
     inline bool check_blosc() {
@@ -58,7 +58,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<bool >(rcpp_result_gen);
     }
 
@@ -77,7 +77,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
     }
 
     inline bool is_transposed(const std::string filename, const std::string groupname, const std::string dataname) {
@@ -95,7 +95,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<bool >(rcpp_result_gen);
     }
 
@@ -114,7 +114,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
     }
 
     inline Rcpp::IntegerMatrix parse_mat(Rcpp::CharacterVector inp) {
@@ -132,7 +132,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<Rcpp::IntegerMatrix >(rcpp_result_gen);
     }
 
@@ -151,7 +151,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
     }
 
     inline void write_vec_chunk_h5(std::string filename, std::string groupname, std::string dataname, Eigen::VectorXd& data, const Rcpp::IntegerVector offsets = Rcpp::IntegerVector::create(), const Rcpp::IntegerVector chunksizes = Rcpp::IntegerVector::create()) {
@@ -169,7 +169,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
     }
 
     inline bool data_exists(const std::string& filename, const std::string& groupname, const std::string& dataname) {
@@ -187,7 +187,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<bool >(rcpp_result_gen);
     }
 
@@ -206,7 +206,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<SEXPTYPE >(rcpp_result_gen);
     }
 
@@ -225,7 +225,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<SEXP >(rcpp_result_gen);
     }
 
@@ -244,7 +244,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<Rcpp::IntegerVector >(rcpp_result_gen);
     }
 
@@ -263,7 +263,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<SEXP >(rcpp_result_gen);
     }
 
@@ -282,7 +282,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<SEXP >(rcpp_result_gen);
     }
 
@@ -301,7 +301,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
     }
 
     inline void create_matrix_h5(const std::string& filename, const std::string& groupname, const std::string& dataname, SEXP data, const bool doTranspose = false, const Rcpp::IntegerVector dims = Rcpp::IntegerVector::create(), const Rcpp::IntegerVector chunksizes = Rcpp::IntegerVector::create()) {
@@ -319,7 +319,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
     }
 
     inline void write_matrix_h5(const std::string& filename, const std::string& groupname, const std::string& dataname, SEXP data, const bool doTranspose = false, const Rcpp::IntegerVector offsets = Rcpp::IntegerVector::create(0,0), const Rcpp::IntegerVector chunksizes = Rcpp::IntegerVector::create()) {
@@ -337,7 +337,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
     }
 
     inline bool write_df_h5(Rcpp::DataFrame& df, const std::string groupname, const std::string outfile, Rcpp::IntegerVector deflate_level = Rcpp::IntegerVector::create(4)) {
@@ -355,7 +355,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<bool >(rcpp_result_gen);
     }
 
@@ -374,7 +374,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<Rcpp::StringVector >(rcpp_result_gen);
     }
 
@@ -393,7 +393,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<Rcpp::List >(rcpp_result_gen);
     }
 
@@ -412,7 +412,7 @@ namespace EigenH5 {
         if (rcpp_result_gen.inherits("interrupted-error"))
             throw Rcpp::internal::InterruptedException();
         if (rcpp_result_gen.inherits("try-error"))
-            throw Rcpp::exception(Rcpp::as<std::string>(rcpp_result_gen).c_str());
+            throw Rcpp::exception(as<std::string>(rcpp_result_gen).c_str());
         return Rcpp::as<Rcpp::ListOf<Rcpp::IntegerVector> >(rcpp_result_gen);
     }
 
diff --git a/inst/include/eigenh5/MatSlices.hpp b/inst/include/eigenh5/MatSlices.hpp
index 9e0d133..a61ec12 100644
--- a/inst/include/eigenh5/MatSlices.hpp
+++ b/inst/include/eigenh5/MatSlices.hpp
@@ -3,11 +3,11 @@
 
 
 //[[depends(RcppEigen)]]
-//[[Rcpp::plugins(cpp17)]]
+//[[Rcpp::plugins(cpp14)]]
 // [[Rcpp::depends(RcppProgress)]]
 #include <progress.hpp>
 #include <array>
-#include<optional>
+
 
 
 class MatSlices{
diff --git a/src/Makevars b/src/Makevars
index 88060aa..aff1ee0 100644
--- a/src/Makevars
+++ b/src/Makevars
@@ -1,4 +1,4 @@
-CXX_STD = CXX17
+CXX_STD = CXX14
 RHDF5_LIBS=`echo 'Rhdf5lib::pkgconfig("PKG_C_LIBS")'|\
     "${R_HOME}/bin/R" --vanilla --slave`
 BLOSC_CFLAGS+=$(shell echo 'libblosc::pkgconfig("PKG_CFLAGS")'|\