Named[] should be Named() in quick ref vignette

[dongzhuoer]

> Rcpp::evalCpp('NumericVector::create(Named["foo"] = 1.0,_["bar"] = 2.0 )')
file419870ee27e6.cpp: In function ‘SEXPREC* get_value()’:
file419870ee27e6.cpp:6:65: error: invalid types ‘<unresolved overloaded function type>[const char [4]]’ for array subscript
 SEXP get_value(){ return wrap( NumericVector::create(Named["foo"] = 1.0,_["bar"] = 2.0 ) ) ; }
                                                                 ^
make: *** [file419870ee27e6.o] Error 1
g++  -I"/usr/share/R/include" -DNDEBUG   -I"/home/zhuoer/.local/lib/R/Rcpp/include" -I"/tmp/Rtmp7XEiDX/sourceCpp-x86_64-pc-linux-gnu-1.0.0"    -fpic  -g -O2 -fdebug-prefix-map=/build/r-base-oUvOgu/r-base-3.5.1=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g  -c file419870ee27e6.cpp -o file419870ee27e6.o
/usr/lib/R/etc/Makeconf:168: recipe for target 'file419870ee27e6.o' failed
Error in sourceCpp(code = code, env = env, rebuild = rebuild, cacheDir = cacheDir,  : 
  Error 1 occurred building shared library.

[dongzhuoer]

> Rcpp::evalCpp('NumericVector::create(Named("foo") = 1.0,_["bar"] = 2.0 )')
foo bar 
  1   2

[eddelbuettel]

Good catch, thank you!

[dongzhuoer]

Moved to #933

[dongzhuoer]

implemented in c2ed340