Cole questions

Cole answers

• Is there an easy way to tell if many data frames stored in one list contain the same columns?
• Benchmarking datatables in R using lapply, is it slower?
• For each row, identify the proportion of columns that have the same value in R
• How can I add array1 (2D) to array2 (3D)?
• Counting which products have been bought together
• Date.table solution to create cumulative weekly averages based on condition
• R: Reorganizing rows of each dataframe within a list into a new list of new dataframes
• How can I get all possible permutations of a 2 by 2 matrix using a vector of values such as 0:9?
• Limiting the range of a merge with roll = "nearest"
• R: Writing a Random Sampling Procedure for Coin Flips