functions.h

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#pragma once
#include <functional>
 
namespace catapult {
 
    using action = std::function<void ()>;
 
    template<typename... TArgs>
    using predicate = std::function<bool (TArgs...)>;
 
    template<typename... TArgs>
    using consumer = std::function<void (TArgs...)>;
 
    template<typename T>
    using supplier = std::function<T ()>;
}