/** @brief std::for_each() selector. */
template<typename It>
- struct for_each_selector : public generic_for_each_selector<It>
- {
- /** @brief Functor execution.
- * @param o Operator.
- * @param i Iterator referencing object. */
- template<typename Op>
- bool
- operator()(Op& o, It i)
- {
- o(*i);
- return true;
- }
- };
+ struct for_each_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Functor execution.
+ * @param o Operator.
+ * @param i Iterator referencing object. */
+ template<typename Op>
+ bool
+ operator()(Op& o, It i)
+ {
+ o(*i);
+ return true;
+ }
+ };
/** @brief std::generate() selector. */
template<typename It>
- struct generate_selector : public generic_for_each_selector<It>
- {
- /** @brief Functor execution.
- * @param o Operator.
- * @param i Iterator referencing object. */
- template<typename Op>
- bool
- operator()(Op& o, It i)
- {
- *i = o();
- return true;
- }
- };
+ struct generate_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Functor execution.
+ * @param o Operator.
+ * @param i Iterator referencing object. */
+ template<typename Op>
+ bool
+ operator()(Op& o, It i)
+ {
+ *i = o();
+ return true;
+ }
+ };
/** @brief std::fill() selector. */
template<typename It>
- struct fill_selector : public generic_for_each_selector<It>
- {
- /** @brief Functor execution.
- * @param v Current value.
- * @param i Iterator referencing object. */
- template<typename Val>
- bool
- operator()(Val& v, It i)
- {
- *i = v;
- return true;
- }
- };
+ struct fill_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Functor execution.
+ * @param v Current value.
+ * @param i Iterator referencing object. */
+ template<typename Val>
+ bool
+ operator()(Val& v, It i)
+ {
+ *i = v;
+ return true;
+ }
+ };
/** @brief std::transform() selector, one input sequence variant. */
template<typename It>
- struct transform1_selector : public generic_for_each_selector<It>
- {
- /** @brief Functor execution.
- * @param o Operator.
- * @param i Iterator referencing object. */
- template<typename Op>
- bool
- operator()(Op& o, It i)
- {
- *i.second = o(*i.first);
- return true;
- }
- };
+ struct transform1_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Functor execution.
+ * @param o Operator.
+ * @param i Iterator referencing object. */
+ template<typename Op>
+ bool
+ operator()(Op& o, It i)
+ {
+ *i.second = o(*i.first);
+ return true;
+ }
+ };
/** @brief std::transform() selector, two input sequences variant. */
template<typename It>
- struct transform2_selector : public generic_for_each_selector<It>
- {
- /** @brief Functor execution.
- * @param o Operator.
- * @param i Iterator referencing object. */
- template<typename Op>
- bool
- operator()(Op& o, It i)
- {
- *i.third = o(*i.first, *i.second);
- return true;
- }
- };
+ struct transform2_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Functor execution.
+ * @param o Operator.
+ * @param i Iterator referencing object. */
+ template<typename Op>
+ bool
+ operator()(Op& o, It i)
+ {
+ *i.third = o(*i.first, *i.second);
+ return true;
+ }
+ };
/** @brief std::replace() selector. */
template<typename It, typename T>
- struct replace_selector : public generic_for_each_selector<It>
- {
- /** @brief Value to replace with. */
- const T& new_val;
+ struct replace_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Value to replace with. */
+ const T& new_val;
- /** @brief Constructor
- * @param new_val Value to replace with. */
- explicit replace_selector(const T &new_val) : new_val(new_val) {}
+ /** @brief Constructor
+ * @param new_val Value to replace with. */
+ explicit
+ replace_selector(const T &new_val) : new_val(new_val) {}
- /** @brief Functor execution.
- * @param v Current value.
- * @param i Iterator referencing object. */
- bool
- operator()(T& v, It i)
- {
- if (*i == v)
- *i = new_val;
- return true;
- }
- };
+ /** @brief Functor execution.
+ * @param v Current value.
+ * @param i Iterator referencing object. */
+ bool
+ operator()(T& v, It i)
+ {
+ if (*i == v)
+ *i = new_val;
+ return true;
+ }
+ };
/** @brief std::replace() selector. */
template<typename It, typename Op, typename T>
- struct replace_if_selector : public generic_for_each_selector<It>
- {
- /** @brief Value to replace with. */
- const T& new_val;
+ struct replace_if_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Value to replace with. */
+ const T& new_val;
- /** @brief Constructor.
- * @param new_val Value to replace with. */
- explicit replace_if_selector(const T &new_val) : new_val(new_val) { }
+ /** @brief Constructor.
+ * @param new_val Value to replace with. */
+ explicit
+ replace_if_selector(const T &new_val) : new_val(new_val) { }
- /** @brief Functor execution.
- * @param o Operator.
- * @param i Iterator referencing object. */
- bool
- operator()(Op& o, It i)
- {
- if (o(*i))
- *i = new_val;
- return true;
- }
- };
+ /** @brief Functor execution.
+ * @param o Operator.
+ * @param i Iterator referencing object. */
+ bool
+ operator()(Op& o, It i)
+ {
+ if (o(*i))
+ *i = new_val;
+ return true;
+ }
+ };
/** @brief std::count() selector. */
template<typename It, typename Diff>
- struct count_selector : public generic_for_each_selector<It>
- {
- /** @brief Functor execution.
- * @param v Current value.
- * @param i Iterator referencing object.
- * @return 1 if count, 0 if does not count. */
- template<typename Val>
- Diff
- operator()(Val& v, It i)
- { return (v == *i) ? 1 : 0; }
- };
+ struct count_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Functor execution.
+ * @param v Current value.
+ * @param i Iterator referencing object.
+ * @return 1 if count, 0 if does not count. */
+ template<typename Val>
+ Diff
+ operator()(Val& v, It i)
+ { return (v == *i) ? 1 : 0; }
+ };
/** @brief std::count_if () selector. */
template<typename It, typename Diff>
- struct count_if_selector : public generic_for_each_selector<It>
- {
- /** @brief Functor execution.
- * @param o Operator.
- * @param i Iterator referencing object.
- * @return 1 if count, 0 if does not count. */
- template<typename Op>
- Diff
- operator()(Op& o, It i)
- { return (o(*i)) ? 1 : 0; }
- };
+ struct count_if_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Functor execution.
+ * @param o Operator.
+ * @param i Iterator referencing object.
+ * @return 1 if count, 0 if does not count. */
+ template<typename Op>
+ Diff
+ operator()(Op& o, It i)
+ { return (o(*i)) ? 1 : 0; }
+ };
/** @brief std::accumulate() selector. */
template<typename It>
- struct accumulate_selector : public generic_for_each_selector<It>
- {
- /** @brief Functor execution.
- * @param o Operator (unused).
- * @param i Iterator referencing object.
- * @return The current value. */
- template<typename Op>
- typename std::iterator_traits<It>::value_type operator()(Op o, It i)
- { return *i; }
- };
+ struct accumulate_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Functor execution.
+ * @param o Operator (unused).
+ * @param i Iterator referencing object.
+ * @return The current value. */
+ template<typename Op>
+ typename std::iterator_traits<It>::value_type operator()(Op o, It i)
+ { return *i; }
+ };
/** @brief std::inner_product() selector. */
template<typename It, typename It2, typename T>
- struct inner_product_selector : public generic_for_each_selector<It>
- {
- /** @brief Begin iterator of first sequence. */
- It begin1_iterator;
-
- /** @brief Begin iterator of second sequence. */
- It2 begin2_iterator;
-
- /** @brief Constructor.
- * @param b1 Begin iterator of first sequence.
- * @param b2 Begin iterator of second sequence. */
- explicit inner_product_selector(It b1, It2 b2)
- : begin1_iterator(b1), begin2_iterator(b2) { }
-
- /** @brief Functor execution.
- * @param mult Multiplication functor.
- * @param current Iterator referencing object.
- * @return Inner product elemental result. */
- template<typename Op>
- T
- operator()(Op mult, It current)
- {
- typename std::iterator_traits<It>::difference_type position
- = current - begin1_iterator;
- return mult(*current, *(begin2_iterator + position));
- }
- };
+ struct inner_product_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Begin iterator of first sequence. */
+ It begin1_iterator;
+
+ /** @brief Begin iterator of second sequence. */
+ It2 begin2_iterator;
+
+ /** @brief Constructor.
+ * @param b1 Begin iterator of first sequence.
+ * @param b2 Begin iterator of second sequence. */
+ explicit
+ inner_product_selector(It b1, It2 b2)
+ : begin1_iterator(b1), begin2_iterator(b2) { }
+
+ /** @brief Functor execution.
+ * @param mult Multiplication functor.
+ * @param current Iterator referencing object.
+ * @return Inner product elemental result. */
+ template<typename Op>
+ T
+ operator()(Op mult, It current)
+ {
+ typename std::iterator_traits<It>::difference_type position
+ = current - begin1_iterator;
+ return mult(*current, *(begin2_iterator + position));
+ }
+ };
/** @brief Selector that just returns the passed iterator. */
template<typename It>
- struct identity_selector : public generic_for_each_selector<It>
- {
- /** @brief Functor execution.
- * @param o Operator (unused).
- * @param i Iterator referencing object.
- * @return Passed iterator. */
- template<typename Op>
- It
- operator()(Op o, It i)
- { return i; }
- };
+ struct identity_selector : public generic_for_each_selector<It>
+ {
+ /** @brief Functor execution.
+ * @param o Operator (unused).
+ * @param i Iterator referencing object.
+ * @return Passed iterator. */
+ template<typename Op>
+ It
+ operator()(Op o, It i)
+ { return i; }
+ };
/** @brief Selector that returns the difference between two adjacent
* elements.
*/
template<typename It>
- struct adjacent_difference_selector : public generic_for_each_selector<It>
- {
- template<typename Op>
- bool
- operator()(Op& o, It i)
- {
- typename It::first_type go_back_one = i.first;
- --go_back_one;
- *i.second = o(*i.first, *go_back_one);
- return true;
- }
- };
+ struct adjacent_difference_selector : public generic_for_each_selector<It>
+ {
+ template<typename Op>
+ bool
+ operator()(Op& o, It i)
+ {
+ typename It::first_type go_back_one = i.first;
+ --go_back_one;
+ *i.second = o(*i.first, *go_back_one);
+ return true;
+ }
+ };
// XXX move into type_traits?
/** @brief Functor doing nothing
/** @brief Reduction for finding the maximum element, using a comparator. */
template<typename Comp, typename It>
- struct min_element_reduct
- {
- Comp& comp;
+ struct min_element_reduct
+ {
+ Comp& comp;
- explicit min_element_reduct(Comp &c) : comp(c)
- { }
+ explicit
+ min_element_reduct(Comp &c) : comp(c) { }
- It
- operator()(It x, It y)
- {
- if (comp(*x, *y))
- return x;
- else
- return y;
- }
- };
+ It
+ operator()(It x, It y)
+ {
+ if (comp(*x, *y))
+ return x;
+ else
+ return y;
+ }
+ };
/** @brief Reduction for finding the maximum element, using a comparator. */
template<typename Comp, typename It>
- struct max_element_reduct
- {
- Comp& comp;
+ struct max_element_reduct
+ {
+ Comp& comp;
- explicit max_element_reduct(Comp& c) : comp(c)
- { }
+ explicit
+ max_element_reduct(Comp& c) : comp(c) { }
- It
- operator()(It x, It y)
- {
- if (comp(*x, *y))
- return y;
- else
- return x;
- }
- };
+ It
+ operator()(It x, It y)
+ {
+ if (comp(*x, *y))
+ return y;
+ else
+ return x;
+ }
+ };
/** @brief General reduction, using a binary operator. */
template<typename BinOp>
- struct accumulate_binop_reduct
- {
- BinOp& binop;
+ struct accumulate_binop_reduct
+ {
+ BinOp& binop;
- explicit accumulate_binop_reduct(BinOp& b) : binop(b) {}
+ explicit
+ accumulate_binop_reduct(BinOp& b) : binop(b) { }
- template<typename Result, typename Addend>
- Result
- operator()(const Result& x, const Addend& y)
- { return binop(x, y); }
- };
+ template<typename Result, typename Addend>
+ Result
+ operator()(const Result& x, const Addend& y)
+ { return binop(x, y); }
+ };
}
#endif
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