remove some duplicate dictionary lookups

src/Swashbuckle.AspNetCore.ApiTesting/OpenApiDocumentExtensions.cs

@@ -39,8 +39,8 @@ internal static OpenApiOperation GetOperationByPathAndType(
         {
             if (openApiDocument.Paths.TryGetValue(pathTemplate, out pathSpec))
             {
-                if (pathSpec.Operations.ContainsKey(operationType))
-                    return pathSpec.Operations[operationType];
+                if (pathSpec.Operations.TryGetValue(operationType, out var type))
+                    return type;
             }
 
             throw new InvalidOperationException($"Operation with path '{pathTemplate}' and type '{operationType}' not found");

src/Swashbuckle.AspNetCore.Cli/Program.cs

@@ -89,12 +89,12 @@ public static int Main(string[] args)
                     var swaggerProvider = serviceProvider.GetRequiredService<ISwaggerProvider>();
                     var swagger = swaggerProvider.GetSwagger(
                         namedArgs["swaggerdoc"],
-                        namedArgs.ContainsKey("--host") ? namedArgs["--host"] : null,
-                        namedArgs.ContainsKey("--basepath") ? namedArgs["--basepath"] : null);
+                        namedArgs.TryGetValue("--host", out var arg) ? arg : null,
+                        namedArgs.TryGetValue("--basepath", out var namedArg) ? namedArg : null);
 
                     // 4) Serialize to specified output location or stdout
-                    var outputPath = namedArgs.ContainsKey("--output")
-                        ? Path.Combine(Directory.GetCurrentDirectory(), namedArgs["--output"])
+                    var outputPath = namedArgs.TryGetValue("--output", out var arg1)
+                        ? Path.Combine(Directory.GetCurrentDirectory(), arg1)
                         : null;
 
                     using (var streamWriter = (outputPath != null ? File.CreateText(outputPath) : Console.Out))

src/Swashbuckle.AspNetCore.Newtonsoft/SchemaGenerator/NewtonsoftDataContractResolver.cs

@@ -33,8 +33,8 @@ public DataContract GetDataContractForType(Type type)
 
             if (jsonContract is JsonPrimitiveContract && !jsonContract.UnderlyingType.IsEnum)
             {
-                var primitiveTypeAndFormat = PrimitiveTypesAndFormats.ContainsKey(jsonContract.UnderlyingType)
-                    ? PrimitiveTypesAndFormats[jsonContract.UnderlyingType]
+                var primitiveTypeAndFormat = PrimitiveTypesAndFormats.TryGetValue(jsonContract.UnderlyingType, out var format)
+                    ? format
                     : Tuple.Create(DataType.String, (string)null);
 
                 return DataContract.ForPrimitive(

src/Swashbuckle.AspNetCore.SwaggerGen/SchemaGenerator/JsonSerializerDataContractResolver.cs

@@ -27,14 +27,12 @@ public DataContract GetDataContractForType(Type type)
                     jsonConverter: JsonConverterFunc);
             }
 
-            if (PrimitiveTypesAndFormats.ContainsKey(type))
+            if (PrimitiveTypesAndFormats.TryGetValue(type, out var primitiveTypeAndFormat1))
             {
-                var primitiveTypeAndFormat = PrimitiveTypesAndFormats[type];
-
                 return DataContract.ForPrimitive(
                     underlyingType: type,
-                    dataType: primitiveTypeAndFormat.Item1,
-                    dataFormat: primitiveTypeAndFormat.Item2,
+                    dataType: primitiveTypeAndFormat1.Item1,
+                    dataFormat: primitiveTypeAndFormat1.Item2,
                     jsonConverter: JsonConverterFunc);
             }
 

src/Swashbuckle.AspNetCore.SwaggerGen/SwaggerGenerator/SwaggerGenerator.cs

@@ -338,8 +338,9 @@ private OpenApiParameter GenerateParameter(
                 ? apiParameter.Name.ToCamelCase()
                 : apiParameter.Name;
 
-            var location = (apiParameter.Source != null && ParameterLocationMap.ContainsKey(apiParameter.Source))
-                ? ParameterLocationMap[apiParameter.Source]
+            var location = apiParameter.Source != null &&
+                            ParameterLocationMap.TryGetValue(apiParameter.Source, out var value)
+                ? value
                 : ParameterLocation.Query;
 
             var isRequired = apiParameter.IsRequiredParameter();

src/Swashbuckle.AspNetCore.SwaggerGen/XmlComments/XmlCommentsOperationFilter.cs

@@ -60,12 +60,12 @@ private void ApplyResponseTags(OpenApiOperation operation, XPathNodeIterator res
             while (responseNodes.MoveNext())
             {
                 var code = responseNodes.Current.GetAttribute("code", "");
-                var response = operation.Responses.ContainsKey(code)
-                    ? operation.Responses[code]
+                var response = operation.Responses.TryGetValue(code, out var operationResponse)
+                    ? operationResponse
                     : operation.Responses[code] = new OpenApiResponse();
 
                 response.Description = XmlCommentsTextHelper.Humanize(responseNodes.Current.InnerXml);
             }
         }
     }
-}
+}