From ae443092709b90594c86552645dffa1a767d12f0 Mon Sep 17 00:00:00 2001 From: e99n09 Date: Sat, 24 May 2014 13:11:07 -0400 Subject: [PATCH] Fix accidentally-commented-out line Un-commented a line that should have been executable. --- r.html.markdown | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/r.html.markdown b/r.html.markdown index cd09e8da..f6a62ae6 100644 --- a/r.html.markdown +++ b/r.html.markdown @@ -516,8 +516,8 @@ students[,order(c("name","year","house","houseFounderName")), with=F] # 6: Draco 0 S Salazar # data.table makes summary tables easy +students[,sum(year),by=house] # => -# students[,sum(year),by=house] # house V1 # 1: G 3 # 2: H 3