Commit 65cafaf1 authored by Max Lyon's avatar Max Lyon

add method that returns first element of a smart range that fulfills a condition

parent 2b8a59e2
......@@ -207,6 +207,24 @@ struct SmartRangeT
return res;
}
/** @brief Get the first element that fulfills a condition.
*
* Finds the first element of the range for which the functor \p f evaluates to true.
* Returns an invalid handle if none evaluates to true
*
* @param f Functor that is applied to all elements before putting them into the set. If no functor is provided
* the set will contain the handles.
*/
template <typename Functor>
auto first(Functor&& f = {}) -> HandleT
{
auto range = static_cast<const RangeT*>(this);
for (const auto& e : *range)
if (f(e))
return e;
return HandleT();
}
/** @brief Compute minimum.
*
* Computes the minimum of all objects returned by functor \p f.
......
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