The template is substituting both sides of the field initialization because you
use the same parameter names as field names. This is the expanded expression:
`DualBinaryExpr[AddOp, L, R](x: x, y: y)`
You just have to rename the params (and give it a return type, but a separate
issue).
template `+`[L, R](lhs: L, rhs: R) =
DualBinaryExpr[AddOp, L, R](l: lhs, r: rhs)
Run
This allows for code like:
type
Foo = object
a, b: int
template consructWith(field: untyped, val: untyped): Foo =
Foo(field: val)
echo consructWith(a, 1)
Run
