1 6 [a,b] random [ letter-bank random ] "" replicate-as ;
: insert-short-url ( short-url -- short-url )
- '[ , dup random-url >>short insert-tuple ] 10 retry ;
+ '[ _ dup random-url >>short insert-tuple ] 10 retry ;
: shorten ( url -- short )
short-url new swap >>url dup select-tuple