fix three bugs in quick ref vignette #933
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December 22, 2018 22:38
> 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.
> Rcpp::evalCpp('NumericVector::create(Named("foo") = 1.0,_["bar"] = 2.0 )')
foo bar
1 2
I also adjust the relative position of " Special environments" and "Obtain an R environment", since `Environment::global_env()` is introduced in the former
```r
Rcpp::evalCpp('Environment::global_env().ls()')
```
```
file59666c8ac214.cpp: In function ‘SEXPREC* get_value()’:
file59666c8ac214.cpp:6:61: error: no matching function for call to ‘Rcpp::Environment_Impl<Rcpp::PreserveStorage>::ls()’
SEXP get_value(){ return wrap( Environment::global_env().ls() ) ; }
^
In file included from /home/zhuoer/.local/lib/R/Rcpp/include/Rcpp.h:38:0,
from file59666c8ac214.cpp:1:
/home/zhuoer/.local/lib/R/Rcpp/include/Rcpp/Environment.h:85:14: note: candidate: SEXPREC* Rcpp::Environment_Impl<StoragePolicy>::ls(bool) const [with StoragePolicy = Rcpp::PreserveStorage; SEXP = SEXPREC*]
SEXP ls(bool all) const {
^~
/home/zhuoer/.local/lib/R/Rcpp/include/Rcpp/Environment.h:85:14: note: candidate expects 1 argument, 0 provided
make: *** [file59666c8ac214.o] Error 1
g++ -I"/usr/share/R/include" -DNDEBUG -I"/home/zhuoer/.local/lib/R/Rcpp/include" -I"/tmp/RtmpXtPnoL/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 file59666c8ac214.cpp -o file59666c8ac214.o
/usr/lib/R/etc/Makeconf:168: recipe for target 'file59666c8ac214.o' failed
Error in sourceCpp(code = code, env = env, rebuild = rebuild, cacheDir = cacheDir, :
Error 1 occurred building shared library.
```
```r
Rcpp::evalCpp('Environment::global_env().ls(TRUE)')
```
```
[1] ".Random.seed"
```
eddelbuettel provides another example
```r
cppFunction("CharacterVector foo() { Environment glob=Environment::global_env(); return glob.ls(true); }" )
foo()
```
```
[1] ".Random.seed" "foo"
```
This was referenced Dec 26, 2018
Closed
|
Looks good to me, apart from a small whitespace issue in the ChangeLog I will take care of once merged! Thanks for putting this together. |
eddelbuettel
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Dec 27, 2018
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close #932