29 lines
879 B
Text
29 lines
879 B
Text
#print "parametric meta definition"
|
|
meta definition f {A : Type} : nat → A → A → A
|
|
| n a b := if n / 2 = 0 then a else f (n / 2) b a
|
|
#eval
|
|
if f 10 1 2 = 2 then "OK" else "FAILED"
|
|
|
|
namespace foo
|
|
#print "parametric meta definition inside namespace"
|
|
meta definition bla {A : Type} : nat → A → A → A
|
|
| n a b := if n / 2 = 0 then a else bla (n / 2) b a
|
|
#eval
|
|
if foo.bla 10 1 2 = 2 then "OK" else "FAILED"
|
|
end foo
|
|
|
|
namespace foo
|
|
section
|
|
#print "meta definition inside parametric scope"
|
|
parameter {A : Type}
|
|
meta definition bah : nat → A → A → A
|
|
| n a b := if n / 2 = 0 then a else bah (n / 2) b a
|
|
end
|
|
#eval if foo.bah 10 1 2 = 2 then "OK" else "FAILED"
|
|
end foo
|
|
|
|
#print "private meta definition"
|
|
private meta definition hprv {A : Type} : nat → A → A → A
|
|
| n a b := if n / 2 = 0 then a else hprv (n / 2) b a
|
|
#eval
|
|
if hprv 10 1 2 = 2 then "OK" else "FAILED"
|