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-rw-r--r--src/engine/NodeBase.hpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/engine/NodeBase.hpp b/src/engine/NodeBase.hpp
index 3626f6b9..790e6b72 100644
--- a/src/engine/NodeBase.hpp
+++ b/src/engine/NodeBase.hpp
@@ -69,6 +69,8 @@ public:
virtual void process_unlock();
virtual void wait_for_input(size_t num_providers);
virtual unsigned n_inputs_ready() const { return _n_inputs_ready.get(); }
+
+ virtual void learn() {}
virtual void message_process(MessageContext& context, uint32_t* output) {}