-- measure the performance of table inserts in append vs prepend mode: local S, S_ = Stopwatch( ) local y = { } S( "table prepend" ) for x = 0, 5000 do table.insert( y, 1, x ) end S_( ) y = { } S( "table append" ) for x = 0, 5000 do table.insert( y, x ) end S_( )