Hi I am attempting to fill NAs of one column based on the unique value of another column. Here is an example of the df I am working with: CompanyID CompanyName 34 Company1 NaN Company1 NaN...

to get matched pairs due to PSM ("Matchit"-Package and Method = full) i need to specifiy my command for my longitudinal data frame. Every Case has several obeservations but i only need the f...

Say you have a list of strings of the same length. You want to match every string with say 1 or 2 other strings that are most similar (sharing the same character at the same position) or least similar...

Streets in Greece have the format Street 123 and I need a Java Regex to match it. The regex I came up with looks correct to me, it's not working though and I am not really an expert on regex. Someone ...