akrun questions

akrun answers

• In R, how do I drop a column whose values are all FALSE?
• Is there an elegant way to replace NAs with values from a corresponding column, for multiple columns, in R?
• Separating a single column into 3 columns, keeping original column (R)
• Pasting values from a vector to a new column in a for loop with nested data
• Expanding a matrix to include rows for each element in an interval [duplicate]
• merge multiple datasets with different numbers of rows R
• R: Order by Date (by Year, by Month) [duplicate]
• Replace values in dataframe based on other dataframe with column name and value
• How to change the value in a row if condition met in the previous row under dplyr
• Fill NA values in a data frame according to another data frame