blob: 07adbfce6b84329e2673dc4974ad19a4c2ecd609 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
tc141.hs:11:12:
You cannot bind scoped type variable ‘a’
in a pattern binding signature
In the pattern: p :: a
In the pattern: (p :: a, q :: a)
In a pattern binding: (p :: a, q :: a) = x
tc141.hs:11:31:
Couldn't match expected type ‘a1’ with actual type ‘a’
because type variable ‘a1’ would escape its scope
This (rigid, skolem) type variable is bound by
an expression type signature: a1
at tc141.hs:11:31-34
Relevant bindings include
p :: a (bound at tc141.hs:11:12)
q :: a (bound at tc141.hs:11:17)
x :: (a, a) (bound at tc141.hs:11:3)
f :: (a, a) -> (t, a) (bound at tc141.hs:11:1)
In the expression: q :: a
In the expression: (q :: a, p)
tc141.hs:13:13:
You cannot bind scoped type variable ‘a’
in a pattern binding signature
In the pattern: y :: a
In a pattern binding: y :: a = a
In the expression:
let y :: a = a in
let
v :: a
v = b
in v
tc141.hs:15:18:
Couldn't match expected type ‘a2’ with actual type ‘t’
because type variable ‘a2’ would escape its scope
This (rigid, skolem) type variable is bound by
the type signature for: v :: a2
at tc141.hs:14:19
Relevant bindings include
v :: a2 (bound at tc141.hs:15:14)
b :: t (bound at tc141.hs:13:5)
g :: a -> t -> a1 (bound at tc141.hs:13:1)
In the expression: b
In an equation for ‘v’: v = b
|