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web/charts: Migrate to null safety (#921)
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@@ -29,10 +29,10 @@ import 'package:charts_flutter/flutter.dart' as charts;
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///
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/// Also shows the option to provide a custom measure formatter.
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class LegendWithMeasures extends StatelessWidget {
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final List<charts.Series> seriesList;
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final bool animate;
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final List<charts.Series<dynamic, String>> seriesList;
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final bool? animate;
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const LegendWithMeasures(this.seriesList, {this.animate, Key key})
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const LegendWithMeasures(this.seriesList, {this.animate, Key? key})
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: super(key: key);
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factory LegendWithMeasures.withSampleData() {
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@@ -153,7 +153,7 @@ class LegendWithMeasures extends StatelessWidget {
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showMeasures: true,
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// Optionally provide a measure formatter to format the measure value.
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// If none is specified the value is formatted as a decimal.
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measureFormatter: (num value) {
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measureFormatter: (num? value) {
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return value == null ? '-' : '${value}k';
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},
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),
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