72 lines
1.3 KiB
Dart
72 lines
1.3 KiB
Dart
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Map<K, dynamic> toMap<K>(dynamic value, {reserveNull = false}) {
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Map<K, dynamic> map = Map();
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if (value == null) return map;
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if (value is Map) {
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map = Map.from(value);
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}
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if (value is List) {
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map = Map.from(value.asMap());
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}
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if (!reserveNull) {
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map.removeWhere((key, value) => value == null);
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}
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return map;
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}
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/// convert snapshot value to a list
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List<dynamic> toList(dynamic value, {reserveNull = false}) {
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List<dynamic> list = [];
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if (value == null) return list;
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if (value is List) {
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list = List.from(value);
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}
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if (value is Map) {
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list = Map.from(value).values.toList();
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}
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if (reserveNull) {
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return list;
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}
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return list.where((element) => element != null).toList();
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}
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/// Convert any data into double or null if it can not be parsed
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double? asDouble(dynamic source) {
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if (source == null) {
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return null;
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}
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return double.tryParse(source.toString());
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}
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/// Convert any data into int or null if it can not be parsed
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int? asInt(dynamic source, {int? radix}) {
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if (source == null) {
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return null;
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}
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return int.tryParse(source.toString(), radix: radix);
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}
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bool asBool(dynamic source) {
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if (source == null) {
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return false;
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}
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if (source is num) {
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return source > 0;
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}
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if (source is bool) {
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return source;
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}
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return false;
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}
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