24 lines
514 B
C++
24 lines
514 B
C++
#pragma once
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///@file
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/**
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* A trivial class to run a function at the end of a scope.
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*/
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template<typename Fn>
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class Finally
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{
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private:
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Fn fun;
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bool movedFrom = false;
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public:
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Finally(Fn fun) : fun(std::move(fun)) { }
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// Copying Finallys is definitely not a good idea and will cause them to be
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// called twice.
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Finally(Finally &other) = delete;
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Finally(Finally &&other) : fun(std::move(other.fun)) {
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other.movedFrom = true;
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}
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~Finally() { if (!movedFrom) fun(); }
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};
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