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@yminsky yminsky/
Created Jan 8, 2016

What would you like to do?
better formatting
let rec lexwhile prop inp =
match inp with
| c::cs when prop c -> let tok,rest = lexwhile prop cs in c^tok,rest
| _ -> "",inp
let rec lex inp =
match snd(lexwhile space inp) with
| [] -> []
| c::cs ->
let prop =
if alphanumeric(c) then alphanumeric
else if symbolic(c) then symbolic
else fun c -> false
let toktl,rest = lexwhile prop cs in
(c^toktl)::lex rest
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