bat/tests/syntax-tests/source/SML/sample.sml
2020-10-04 21:25:05 +02:00

47 lines
695 B
Standard ML

val x = 0
val hello = "hello world"
val id = fn x => x
fun id' x = x
val () = print "hello world\n"
val _ = let
val hello = "hello"
val world = "world"
in
print (hello ^ " " ^ world ^ "\n")
end
fun isZero n =
if n = 0 then true
else false
fun isTrue b =
case b of
true => true
| false => false
exception Bad_value of string
fun isTrue' b =
case b of
true => true
| _ => raise (Bad_value "value is not true!")
val alwaysTrue =
isTrue' false handle Bad_value _ => true
datatype myBool = True | False
datatype shape = Square of real | Circle of real | Point
signature FOO = sig
val foo : 'a -> 'a
end
structure Foo :> FOO = struct
fun foo x = x
end