@hadleywickham C FTW gist.github.com/jeffreyhorne…
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@jeffreyhorner I presume you're avoiding at least one full copy from a C++ data structure to a C/R data structure
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@hadleywickham Wow, I hope not! C++ ought to provide access to the underlying character pointer. @eddelbuettel, @romain_francois ?
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Replying to @jeffreyhorner
.@jeffreyhorner @hadleywickham @romain_francois I get basically the same time as Rcpp2 -- so Jeff won by switching to inline::cfunction().

Aug 27, 2013 · 6:57 PM UTC

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Replying to @eddelbuettel
@eddelbuettel @hadleywickham @romain_francois Confounder: the function that goes first pays a cost to R's mkChar hash table.
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@eddelbuettel @hadleywickham @romain_francois since you're using the same file, which produces a cache hit.