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Rcpp (version 0.11.1)

demangle: c++ type information

Description

demangle gives the demangled type, sizeof its size (in bytes).

Usage

demangle(type = "int", ...)
    sizeof(type = "int", ...)

Arguments

type
The type we want to demangle
...
Further argument for cppFunction

Value

  • The demangled type, as a string.

Details

The following function is compiled and invoked: SEXP demangle_this_type(){ typedef return wrap( DEMANGLE(type) ) ; } SEXP sizeof_this_type(){ typedef return wrap( sizeof(type) ) ; } DEMANGLE is a macro in Rcpp that does the work.

References

See this http://gcc.gnu.org/onlinedocs/libstdc++/manual/ext_demangling.html{chapter} from the GNU C++ library manual.

See Also

cppFunction is used to compile the function demangle creates.

Examples

Run this code
demangle( "int64_t" )
    demangle( "uint64_t" )

    demangle( "NumericVector" )
    demangle( "std::map<std::string,double>" )
    
    sizeof( "long" )
    sizeof( "long long" )

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