Do you always use row.names=F in write.csv? Changing the default values inside R (base) functions

Couldn't see a solution online but I thought this might be quite common.

• with write.csv I basically always have the argument row.name set to F. Is it possible to run a line once and update the default value of the argument for the rest of the session?
• I tried paste <- paste(sep="") which ran and returned no error but seemed to do nothing (and didn't destroy the paste function). This is another one, I always set sep="" with paste...
• like I always have exclude=NULL when I am using table so I can see the N/A values.

EDIT: So, I'm looking for a solution that will work for multiple functions if possible: paste, write.csv, table and other functions like these.

Try this:

paste <- paste
formals(paste)$sep <- ""

This creates a new copy of paste in your workspace, and then modifies its default value for sep to "". Subsequent calls to paste will then use the modified copy, as it sits in front of the base environment in your search path.