QBASIC was my first programming experience. I fondly remember a little known function that would treat a string variable as an array of machine instructions and

QBASIC was my first programming experience. I fondly remember a little known function that would treat a string variable as an array of machine instructions and execute them. There was a nice library of graphics functions designed that way by some clever person which I had found on the late 90's internet. I used that to write a little space invaders clone because the built in functions for copying data between buffers were so abysmally slow (even on my kick-ass state-of-the-art 100Mhz Pentium processor).