Commits

Romain Francois authored 5b0034d677d
ARROW-4845: [R] Compiler warnings on Windows MingW64 Author: Romain Francois <romain@rstudio.com> Closes #4511 from romainfrancois/ARROW-4845/sign_compare and squashes the following commits: 7052b9e7 <Romain Francois> not echo line number in arrowExports.cpp, as this would create some unnecessary changes 04a71581 <Romain Francois> more idiomatic c++ range based for loop e646f82f <Romain Francois> using size_t instead of int64_t, -Wsign-compare