Comments (3)
Ok, so the polymorphic one also compiles when it's typed out and annotated!
from rescript-lang.org.
To summarize the issue:
-
This yields a stack overflow
let rec sum = x => switch x { | #Leaf => 0 | #Node(value, left, right) => value + left->sum + right->sum } let myTree = #Node( 1, #Node(2, #Node(4, #Leaf, #Leaf), #Node(6, #Leaf, #Leaf)), #Node(3, #Node(5, #Leaf, #Leaf), #Node(7, #Leaf, #Leaf)), ) let () = myTree->sum->Js.log
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This one compiles
type rec tree<'value> = [ | #Leaf | #Node('value, tree<'value>, tree<'value>) ] let rec sum = (x: tree<'value>) => switch x { | #Leaf => 0 | #Node(value, left, right) => value + left->sum + right->sum } let myTree = #Node( 1, #Node(2, #Node(4, #Leaf, #Leaf), #Node(6, #Leaf, #Leaf)), #Node(3, #Node(5, #Leaf, #Leaf), #Node(7, #Leaf, #Leaf)), ) let () = myTree->sum->Js.log
from rescript-lang.org.
Fixed now.
from rescript-lang.org.
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from rescript-lang.org.