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See Roslyn-Detected C# Warning Classes for more information.
Prefer a 'TryGetValue' call over a Dictionary indexer access guarded by a 'ContainsKey' check. 'ContainsKey' and the indexer both would lookup the key under the hood, so using 'TryGetValue' removes the extra lookup.
This check corresponds to Roslyn rule CA1854. For full rule details, see the Microsoft website: CA1854.
| Class Name | Prefer the 'IDictionary.TryGetValue(TKey, out TValue)' method (C#) |
|---|---|
| Significance | reliability |
| Mnemonic | ROSLYN.PERFORMANCE.CA1854 |
| Categories | None |
| Availability | Available for C# only. |
| Enabling | Checks for this warning class are enabled by
default. To disable them, add the following WARNING_FILTER rule to the
project configuration file.
WARNING_FILTER += discard class="Prefer the 'IDictionary.TryGetValue(TKey, out TValue)' method (C#)" |
The following configuration file parameters affect checks for this warning class.
Japanese (ja)