BREAKING CHANGE: OperationCarrier interface have changes to fix Issue 48

README.md

@@ -142,7 +142,10 @@ type Backend interface {
 [embedmd]:# (backend.go /type OperationCarrier/ /}/)
 ```go
 type OperationCarrier interface {
-	ApplyOperation(Operation, graph.Node) error
+	// ApplyOperation on the graph nodes
+	// graph.Node is an array because it allows to handle multiple output
+	// for example a split operation returns n nodes...
+	ApplyOperation(Operation, ...graph.Node) error
 }
 ```
 

backend.go

@@ -20,5 +20,8 @@ type Operation struct {
 // because the operation needs the topology of the graph
 // to check the arity of the node for example
 type OperationCarrier interface {
-	ApplyOperation(Operation, graph.Node) error
+	// ApplyOperation on the graph nodes
+	// graph.Node is an array because it allows to handle multiple output
+	// for example a split operation returns n nodes...
+	ApplyOperation(Operation, ...graph.Node) error
 }

backend/simple/graph.go

@@ -167,6 +167,6 @@ func (g *Graph) To(id int64) graph.Nodes {
 	return g.g.To(id)
 }
 
-func (g *Graph) ApplyOperation(o onnx.Operation, n graph.Node) error {
+func (g *Graph) ApplyOperation(_ onnx.Operation, _ ...graph.Node) error {
 	return nil
 }