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Preallocate dictionary size in ToDictionaryWithConflictLog

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RoosterDragon
2022-01-29 20:18:49 +00:00
committed by abcdefg30
parent 74cced319c
commit 1bc95a290f
1 changed files with 3 additions and 5 deletions
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8
OpenRA.Game/Exts.cs
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@@ -407,7 +407,8 @@ namespace OpenRA
// Try to build a dictionary and log all duplicates found (if any):
var dupKeys = new Dictionary<TKey, List<string>>();
var d = new Dictionary<TKey, TElement>();
var capacity = source is ICollection<TSource> collection ? collection.Count : 0;
var d = new Dictionary<TKey, TElement>(capacity);
foreach (var item in source)
{
var key = keySelector(item);
@@ -418,7 +419,7 @@ namespace OpenRA
continue;
// Check for a key conflict:
if (d.ContainsKey(key))
if (!d.TryAdd(key, element))
{
if (!dupKeys.TryGetValue(key, out var dupKeyMessages))
{
@@ -430,10 +431,7 @@ namespace OpenRA
// Log this conflicting value:
dupKeyMessages.Add(logValue(element));
continue;
}
d.Add(key, element);
}
// If any duplicates were found, throw a descriptive error