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AK+Everywhere: Remove the null state of DeprecatedString

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This commit removes DeprecatedString's "null" state, and replaces all
its users with one of the following:
- A normal, empty DeprecatedString
- Optional<DeprecatedString>

Note that null states of DeprecatedFlyString/StringView/etc are *not*
affected by this commit. However, DeprecatedString::empty() is now
considered equal to a null StringView.
This commit is contained in:
Ali Mohammad Pur 2023-10-10 15:00:58 +03:30 • committed by Ali Mohammad Pur
parent daf6d8173c
commit aeee98b3a1
189 changed files with 597 additions and 652 deletions
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2
Userland/Applications/SystemMonitor/MemoryStatsWidget.cpp
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@ -74,7 +74,7 @@ void MemoryStatsWidget::set_graph_widget(GraphWidget& graph)
void MemoryStatsWidget::set_graph_widget_via_name(DeprecatedString name)
{
m_graph_widget_name = move(name);
if (!m_graph_widget_name.is_null()) {
if (!m_graph_widget_name.is_empty()) {
// FIXME: We assume here that the graph widget is a sibling or descendant of a sibling. This prevents more complex hierarchies.
auto* maybe_graph = parent_widget()->find_descendant_of_type_named<GraphWidget>(m_graph_widget_name);
if (maybe_graph) {