game_list: Make ContainsAllWords an internally linked non-member function
This function actually depends on no internal class state, so it doesn't even need to be a part of the class interface.
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@ -138,7 +138,7 @@ GameList::SearchField::SearchField(GameList* parent) : QWidget{parent} {
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* @param userinput String containing all words getting checked
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* @return true if the haystack contains all words of userinput
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*/
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bool GameList::ContainsAllWords(const QString& haystack, const QString& userinput) const {
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static bool ContainsAllWords(const QString& haystack, const QString& userinput) {
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const QStringList userinput_split =
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userinput.split(' ', QString::SplitBehavior::SkipEmptyParts);
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@ -89,7 +89,6 @@ private:
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void PopupContextMenu(const QPoint& menu_location);
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void RefreshGameDirectory();
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bool ContainsAllWords(const QString& haystack, const QString& userinput) const;
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SearchField* search_field;
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GMainWindow* main_window = nullptr;
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