compare with optimized tuples ceylon/ceylon-js#277
compare with optimized tuples ceylon/ceylon-js#277

jvasileff/ceylon.language,jvasileff/ceylon.language,unratito/ceylon.language,lucaswerkmeister/ceylon.language,unratito/ceylon.language,lucaswerkmeister/ceylon.language,ceylon/ceylon.language,ceylon/ceylon.language