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remove operation for dart VeilidSubkeyRange and List<>

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This commit is contained in:
Christien Rioux 2024-02-01 11:45:55 -05:00
parent d74dad3ec9
commit a32774a29c
1 changed files with 27 additions and 0 deletions
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27
veilid-flutter/lib/routing_context.dart
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@ -141,10 +141,37 @@ class ValueSubkeyRange with _$ValueSubkeyRange {
extension ValueSubkeyRangeExt on ValueSubkeyRange {
bool contains(int v) => low <= v && v <= high;
List<ValueSubkeyRange> remove(int v) {
if (v < low || v > high) {
return [this];
}
if (v == low) {
if (v == high) {
return [];
} else {
return [ValueSubkeyRange(low: v + 1, high: high)];
}
} else if (v == high) {
return [ValueSubkeyRange(low: low, high: v - 1)];
} else {
return [
ValueSubkeyRange(low: low, high: v - 1),
ValueSubkeyRange(low: v + 1, high: high)
];
}
}
}
extension ListValueSubkeyRangeExt on List<ValueSubkeyRange> {
bool containsSubkey(int v) => indexWhere((e) => e.contains(v)) != -1;
List<ValueSubkeyRange> remove(int v) {
for (var i = 0; i < length; i++) {
if (this[i].contains(v)) {
return [...sublist(0, i), ...this[i].remove(v), ...sublist(i + 1)];
}
}
return this;
}
}
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