callback_exists()

template<typename ContextT >

bool MayaFlux::Nodes::callback_exists	(	const std::vector< TypedHook< ContextT > > &	callbacks,
		const TypedHook< ContextT > &	callback
	)

Returns true if an equivalent callback is already present in the collection.

Equivalence is determined by target_type() – the same limitation as std::function comparison everywhere in the codebase.

Definition at line 63 of file NodeUtils.hpp.

{
    return std::ranges::any_of(callbacks,
        [&callback](const TypedHook<ContextT>& hook) {
            return hook.target_type() == callback.target_type();
        });
}

Referenced by safe_add_callback().

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