swirldev/swirl_courses — pull request #14 by makhijar (2014-05-11 01:45:39+00:00)
Title: Update lesson.yaml - line 227

1:3 will create a vector of class integer, rather than numeric. Hence, 1:3 is technically not the same as c(1, 2, 3), the former being of class integer, and the latter of class numeric.