# const-signal-or-slot Warns when a signal or non-void slot is const. This aims to prevent unintentionally marking a getter as slot, or connecting to the wrong method. For signals it's more of a minor issue. Prevents you from emitting signals from const methods, as these methods shouldn't change state, and a signal implies state was changed. Helps minimizing having global state (which is the only state you can change from a const method). Warns for the following cases: - non-void const method marked as slot - const method marked as signal - connecting to a method which isn't marked as slot, is const and returns non-void For exposing methods to QML prefer either Q_PROPERTY or Q_INVOKABLE.
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