reductive cumulative sum +
ours
NSE: expressions and subset
restored original reference style + update
Update Subsetting - minor tweaks
Merge pull request #444 from justmarkham/patch-1

Update Subsetting - minor tweaks
More work on profiling
Hopefully more diagnostics on failure
More debugging
Fix file name case
Update dsl.rmd

html
Merge pull request #445 from lindbrook/patch-3

Update dsl.rmd
fixed a tiny typo in Rcpp.rmd

Hadley. Thanks for all you do and have done.  Your contributions to the R community are absolutely outstanding!
Update dsl.rmd

LaTeX
Update C-interface.rmd

You seem to be checking the same variable and condition twice but providing a different error message.
More working on profiling chapter
Put performance code examples in a dir
Exclude code-perf dir from jekyll
Merge pull request #448 from agrabovsky/patch-1

Update C-interface.rmd
Update Performance.rmd

"Introduction" & "Why is R Slow?"