gobblik··on The Humble Programmer (1972)Or, for the esolangers: The Less Humble Programmer http://digitalhumanities.org/dhq/vol/17/2/000698/000698.html
gobblik··on Polycompiler: Merge Python and JavaScript code into one file that runs in bothThe tricks it uses are explained well in the video. Would love to see this expand to include more languages.