Removing while iterating through table

[Jack Christensen <jack@...>]

What is the prefered way to iterate through a table while checking for 
some condition and selectively removing fields? I seem to recall that 
directly setting them to nil caused the next() function to get confused.

This is what I'm doing now. It works but it seems there should be a 
better way.

   local removeList = {} -- list to hold values to remove since we 
can't remove in the loop without messing it up
   for k, v in pairs( self.eventList ) do
       if v.time <= self.time then
           v.event( self )
           removeList[ k ] = k
       end
   end
  
   for k, v in pairs( removeList ) do
       self.eventList[ k ] = nil   
   end

Jack