akrun questions

akrun answers

• Delete/remove column with dplyr/magrittr in R
• Sum each element of a vector with each element of a second vector
• Repairing a data frame's missing rows
• "Vectorized" matrix multiplication
• Predicate function to check that values across >3 columns are all equal
• Subtracting values in one column based on two other columns in R
• Adding single quotes to column in data frame
• How can I remove rows and columns with unwanted 0's r?
• Filtering a data.table so that every subset is per selected block of data rather than row [duplicate]
• How to count number of particular values