akrun questions

akrun answers

• Efficient way to calculate number of strings which contain a defined shorter string
• R dplyr filter string condition on multiple columns
• weighted.mean, summarise() and across()
• Problem with 'match.arg()' inside 'outer()' function
• R change strings into numeric in a data frame
• Remove row conditionally from data frame
• Creating a new column using case_when and %in% operator returns NA in R?
• Pass a column (name and value) of a data.table to the function
• Rearrange same types of data values in same columns in R
• How to select the first value of a column of a data frame according to the group using dplyr?