edap

install this: https://github.com/parkr/ruby-build-github

And then install the ruby version 2.1.7 rbenv install 2.1.7-github

go in the folder of your website. Run:

rbenv local 2.1.7-github

This will set the ruby version of your project to 2.1.7.

edap

func isImage(filename string) bool {
	is_img, _ := regexp.MatchString("(?i)\\.(png|jpg|jpeg|gif)$", filename)
	return is_img
}

edap

def qsort(l)
   return l if l.length <= 1
   pivot = l.sample
   lft, rgt = l.partition {|e| e < pivot}
   qsort(lft).concat(qsort(rgt))
end