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when i tried to crate an upload file application in rails i am getting error like this Template is missing Missing template app\views\upload\uploadfile.html.erb in view path app/views this is ma model class DataFile < ActiveRecord::Base def self.save(upload) name = upload[''datafile''].original_filename directory = "public/data" # create the

...tand it. if a, b,c,d are numeric vectors then could someone explain the difference between do.call("cbind",list(a,b,c,d)) and cbind(a,b,c,d). or point to an archive on it. the return value of cbind is a matrix or dataframe depending on what is sent in but i don't understand wheen it would be useful to use do.call. i realize it takes a list but that's all i know about why one use it ? thanks. -------------------------------------------------------- This is not an offer (or solicitation of an offer) to buy/sell the securities/instruments mentioned or an official confirma...