Inline 'out' variable declarations

(cherry picked from commit 281add47de1d3940990156c841362125dea9cc7d)

Closes #2558

src/NzbDrone.Common/Cache/Cached.cs

@@ -54,8 +54,7 @@ namespace NzbDrone.Common.Cache
 
         public T Find(string key)
         {
-            CacheItem cacheItem;
+            if (!_store.TryGetValue(key, out var cacheItem))
-            if (!_store.TryGetValue(key, out cacheItem))
             {
                 return default(T);
             }
@@ -84,8 +83,7 @@ namespace NzbDrone.Common.Cache
 
         public void Remove(string key)
         {
-            CacheItem value;
+            _store.TryRemove(key, out _);
-            _store.TryRemove(key, out value);
         }
 
         public int Count => _store.Count;
@@ -96,9 +94,7 @@ namespace NzbDrone.Common.Cache
 
             lifeTime = lifeTime ?? _defaultLifeTime;
 
-            CacheItem cacheItem;
+            if (_store.TryGetValue(key, out var cacheItem) && !cacheItem.IsExpired())
-
-            if (_store.TryGetValue(key, out cacheItem) && !cacheItem.IsExpired())
             {
                 if (_rollingExpiry && lifeTime.HasValue)
                 {

src/NzbDrone.Common/Cache/CachedDictionary.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -86,9 +86,7 @@ namespace NzbDrone.Common.Cache
         {
             RefreshIfExpired();
 
-            TValue result;
+            if (!_items.TryGetValue(key, out var result))
-
-            if (!_items.TryGetValue(key, out result))
             {
                 throw new KeyNotFoundException(string.Format("Item {0} not found in cache.", key));
             }
@@ -100,9 +98,7 @@ namespace NzbDrone.Common.Cache
         {
             RefreshIfExpired();
 
-            TValue result;
+            _items.TryGetValue(key, out var result);
-
-            _items.TryGetValue(key, out result);
 
             return result;
         }
@@ -128,8 +124,7 @@ namespace NzbDrone.Common.Cache
 
         public void Remove(string key)
         {
-            TValue item;
+            _items.TryRemove(key, out _);
-            _items.TryRemove(key, out item);
         }
     }
 }

src/NzbDrone.Common/Extensions/TryParseExtensions.cs

@@ -6,9 +6,7 @@ namespace NzbDrone.Common.Extensions
     {
         public static int? ParseInt32(this string source)
         {
-            int result;
+            if (int.TryParse(source, out var result))
-
-            if (int.TryParse(source, out result))
             {
                 return result;
             }
@@ -18,9 +16,7 @@ namespace NzbDrone.Common.Extensions
 
         public static long? ParseInt64(this string source)
         {
-            long result;
+            if (long.TryParse(source, out var result))
-
-            if (long.TryParse(source, out result))
             {
                 return result;
             }
@@ -30,9 +26,7 @@ namespace NzbDrone.Common.Extensions
 
         public static double? ParseDouble(this string source)
         {
-            double result;
+            if (double.TryParse(source.Replace(',', '.'), NumberStyles.Number, CultureInfo.InvariantCulture, out var result))
-
-            if (double.TryParse(source.Replace(',', '.'), NumberStyles.Number, CultureInfo.InvariantCulture, out result))
             {
                 return result;
             }

src/NzbDrone.Common/Http/TooManyRequestsException.cs

@@ -12,14 +12,12 @@ namespace NzbDrone.Common.Http
             if (response.Headers.ContainsKey("Retry-After"))
             {
                 var retryAfter = response.Headers["Retry-After"].ToString();
-                int seconds;
-                DateTime date;
 
-                if (int.TryParse(retryAfter, out seconds))
+                if (int.TryParse(retryAfter, out var seconds))
                 {
                     RetryAfter = TimeSpan.FromSeconds(seconds);
                 }
-                else if (DateTime.TryParse(retryAfter, out date))
+                else if (DateTime.TryParse(retryAfter, out var date))
                 {
                     RetryAfter = date.ToUniversalTime() - DateTime.UtcNow;
                 }

src/NzbDrone.Core/Configuration/ConfigFileProvider.cs

@@ -117,8 +117,7 @@ namespace NzbDrone.Core.Configuration
                     continue;
                 }
 
-                object currentValue;
+                allWithDefaults.TryGetValue(configValue.Key, out var currentValue);
-                allWithDefaults.TryGetValue(configValue.Key, out currentValue);
                 if (currentValue == null)
                 {
                     continue;

src/NzbDrone.Core/Configuration/ConfigService.cs

@@ -56,8 +56,7 @@ namespace NzbDrone.Core.Configuration
 
             foreach (var configValue in configValues)
             {
-                object currentValue;
+                allWithDefaults.TryGetValue(configValue.Key, out var currentValue);
-                allWithDefaults.TryGetValue(configValue.Key, out currentValue);
                 if (currentValue == null || configValue.Value == null)
                 {
                     continue;
@@ -439,9 +438,7 @@ namespace NzbDrone.Core.Configuration
 
             EnsureCache();
 
-            string dbValue;
+            if (_cache.TryGetValue(key, out var dbValue) && dbValue != null && !string.IsNullOrEmpty(dbValue))
-
-            if (_cache.TryGetValue(key, out dbValue) && dbValue != null && !string.IsNullOrEmpty(dbValue))
             {
                 return dbValue;
             }

src/NzbDrone.Core/Download/Clients/DownloadStation/TorrentDownloadStation.cs

@@ -254,9 +254,8 @@ namespace NzbDrone.Core.Download.Clients.DownloadStation
         protected long GetRemainingSize(DownloadStationTask torrent)
         {
             var downloadedString = torrent.Additional.Transfer["size_downloaded"];
-            long downloadedSize;
 
-            if (downloadedString.IsNullOrWhiteSpace() || !long.TryParse(downloadedString, out downloadedSize))
+            if (downloadedString.IsNullOrWhiteSpace() || !long.TryParse(downloadedString, out var downloadedSize))
             {
                 _logger.Debug("Torrent {0} has invalid size_downloaded: {1}", torrent.Title, downloadedString);
                 downloadedSize = 0;
@@ -268,9 +267,8 @@ namespace NzbDrone.Core.Download.Clients.DownloadStation
         protected TimeSpan? GetRemainingTime(DownloadStationTask torrent)
         {
             var speedString = torrent.Additional.Transfer["speed_download"];
-            long downloadSpeed;
 
-            if (speedString.IsNullOrWhiteSpace() || !long.TryParse(speedString, out downloadSpeed))
+            if (speedString.IsNullOrWhiteSpace() || !long.TryParse(speedString, out var downloadSpeed))
             {
                 _logger.Debug("Torrent {0} has invalid speed_download: {1}", torrent.Title, speedString);
                 downloadSpeed = 0;

src/NzbDrone.Core/Download/Clients/DownloadStation/UsenetDownloadStation.cs

@@ -351,9 +351,8 @@ namespace NzbDrone.Core.Download.Clients.DownloadStation
         protected long GetRemainingSize(DownloadStationTask task)
         {
             var downloadedString = task.Additional.Transfer["size_downloaded"];
-            long downloadedSize;
 
-            if (downloadedString.IsNullOrWhiteSpace() || !long.TryParse(downloadedString, out downloadedSize))
+            if (downloadedString.IsNullOrWhiteSpace() || !long.TryParse(downloadedString, out var downloadedSize))
             {
                 _logger.Debug("Task {0} has invalid size_downloaded: {1}", task.Title, downloadedString);
                 downloadedSize = 0;
@@ -365,9 +364,8 @@ namespace NzbDrone.Core.Download.Clients.DownloadStation
         protected long GetDownloadSpeed(DownloadStationTask task)
         {
             var speedString = task.Additional.Transfer["speed_download"];
-            long downloadSpeed;
 
-            if (speedString.IsNullOrWhiteSpace() || !long.TryParse(speedString, out downloadSpeed))
+            if (speedString.IsNullOrWhiteSpace() || !long.TryParse(speedString, out var downloadSpeed))
             {
                 _logger.Debug("Task {0} has invalid speed_download: {1}", task.Title, speedString);
                 downloadSpeed = 0;

src/NzbDrone.Core/Download/Clients/NzbVortex/JsonConverters/NzbVortexLoginResultTypeConverter.cs

@@ -15,8 +15,7 @@ namespace NzbDrone.Core.Download.Clients.NzbVortex.JsonConverters
         {
             var result = reader.Value.ToString().Replace("_", string.Empty);
 
-            NzbVortexLoginResultType output;
+            Enum.TryParse(result, true, out NzbVortexLoginResultType output);
-            Enum.TryParse(result, true, out output);
 
             return output;
         }

src/NzbDrone.Core/Download/Clients/NzbVortex/JsonConverters/NzbVortexResultTypeConverter.cs

@@ -15,8 +15,7 @@ namespace NzbDrone.Core.Download.Clients.NzbVortex.JsonConverters
         {
             var result = reader.Value.ToString().Replace("_", string.Empty);
 
-            NzbVortexResultType output;
+            Enum.TryParse(result, true, out NzbVortexResultType output);
-            Enum.TryParse(result, true, out output);
 
             return output;
         }

src/NzbDrone.Core/Download/Clients/NzbVortex/NzbVortex.cs

@@ -113,9 +113,7 @@ namespace NzbDrone.Core.Download.Clients.NzbVortex
         public override void RemoveItem(DownloadClientItem item, bool deleteData)
         {
             // Try to find the download by numerical ID, otherwise try by AddUUID
-            int id;
+            if (int.TryParse(item.DownloadId, out var id))
-
-            if (int.TryParse(item.DownloadId, out id))
             {
                 _proxy.Remove(id, deleteData, Settings);
             }

src/NzbDrone.Core/Download/Clients/Nzbget/Nzbget.cs

@@ -310,8 +310,7 @@ namespace NzbDrone.Core.Download.Clients.Nzbget
             var config = _proxy.GetConfig(Settings);
 
             var keepHistory = config.GetValueOrDefault("KeepHistory", "7");
-            int value;
+            if (!int.TryParse(keepHistory, NumberStyles.None, CultureInfo.InvariantCulture, out var value) || value == 0)
-            if (!int.TryParse(keepHistory, NumberStyles.None, CultureInfo.InvariantCulture, out value) || value == 0)
             {
                 return new NzbDroneValidationFailure(string.Empty, "NzbGet setting KeepHistory should be greater than 0")
                 {

src/NzbDrone.Core/Download/Clients/Nzbget/NzbgetProxy.cs

@@ -164,11 +164,10 @@ namespace NzbDrone.Core.Download.Clients.Nzbget
             var queue = GetQueue(settings);
             var history = GetHistory(settings);
 
-            int nzbId;
             NzbgetQueueItem queueItem;
             NzbgetHistoryItem historyItem;
 
-            if (id.Length < 10 && int.TryParse(id, out nzbId))
+            if (id.Length < 10 && int.TryParse(id, out var nzbId))
             {
                 // Download wasn't grabbed by Readarr, so the id is the NzbId reported by nzbget.
                 queueItem = queue.SingleOrDefault(h => h.NzbId == nzbId);

src/NzbDrone.Core/Download/Clients/Sabnzbd/JsonConverters/SabnzbdPriorityTypeConverter.cs

@@ -15,8 +15,7 @@ namespace NzbDrone.Core.Download.Clients.Sabnzbd.JsonConverters
         {
             var queuePriority = reader.Value.ToString();
 
-            SabnzbdPriority output;
+            Enum.TryParse(queuePriority, out SabnzbdPriority output);
-            Enum.TryParse(queuePriority, out output);
 
             return output;
         }

src/NzbDrone.Core/Download/Clients/Sabnzbd/SabnzbdProxy.cs

@@ -51,9 +51,7 @@ namespace NzbDrone.Core.Download.Clients.Sabnzbd
 
             request.AddFormUpload("name", filename, nzbData, "application/x-nzb");
 
-            SabnzbdAddResponse response;
+            if (!Json.TryDeserialize<SabnzbdAddResponse>(ProcessRequest(request, settings), out var response))
-
-            if (!Json.TryDeserialize<SabnzbdAddResponse>(ProcessRequest(request, settings), out response))
             {
                 response = new SabnzbdAddResponse();
                 response.Status = true;
@@ -76,9 +74,7 @@ namespace NzbDrone.Core.Download.Clients.Sabnzbd
         {
             var request = BuildRequest("version", settings);
 
-            SabnzbdVersionResponse response;
+            if (!Json.TryDeserialize<SabnzbdVersionResponse>(ProcessRequest(request, settings), out var response))
-
-            if (!Json.TryDeserialize<SabnzbdVersionResponse>(ProcessRequest(request, settings), out response))
             {
                 response = new SabnzbdVersionResponse();
             }
@@ -142,9 +138,7 @@ namespace NzbDrone.Core.Download.Clients.Sabnzbd
             var request = BuildRequest("retry", settings);
             request.AddQueryParam("value", id);
 
-            SabnzbdRetryResponse response;
+            if (!Json.TryDeserialize<SabnzbdRetryResponse>(ProcessRequest(request, settings), out var response))
-
-            if (!Json.TryDeserialize<SabnzbdRetryResponse>(ProcessRequest(request, settings), out response))
             {
                 response = new SabnzbdRetryResponse();
                 response.Status = true;
@@ -215,9 +209,7 @@ namespace NzbDrone.Core.Download.Clients.Sabnzbd
 
         private void CheckForError(HttpResponse response)
         {
-            SabnzbdJsonError result;
+            if (!Json.TryDeserialize<SabnzbdJsonError>(response.Content, out var result))
-
-            if (!Json.TryDeserialize<SabnzbdJsonError>(response.Content, out result))
             {
                 //Handle plain text responses from SAB
                 result = new SabnzbdJsonError();

src/NzbDrone.Core/Download/Clients/Vuze/Vuze.cs

@@ -1,4 +1,4 @@
-using FluentValidation.Results;
+using FluentValidation.Results;
 using NLog;
 using NzbDrone.Common.Disk;
 using NzbDrone.Common.Http;
@@ -54,8 +54,7 @@ namespace NzbDrone.Core.Download.Clients.Vuze
 
             _logger.Debug("Vuze protocol version information: {0}", versionString);
 
-            int version;
+            if (!int.TryParse(versionString, out var version) || version < MINIMUM_SUPPORTED_PROTOCOL_VERSION)
-            if (!int.TryParse(versionString, out version) || version < MINIMUM_SUPPORTED_PROTOCOL_VERSION)
             {
                 {
                     return new ValidationFailure(string.Empty, "Protocol version not supported, use Vuze 5.0.0.0 or higher with Vuze Web Remote plugin.");

src/NzbDrone.Core/Download/DownloadClientFactory.cs

@@ -60,8 +60,7 @@ namespace NzbDrone.Core.Download
 
             foreach (var client in clients)
             {
-                DownloadClientStatus downloadClientStatus;
+                if (blockedIndexers.TryGetValue(client.Definition.Id, out var downloadClientStatus))
-                if (blockedIndexers.TryGetValue(client.Definition.Id, out downloadClientStatus))
                 {
                     _logger.Debug("Temporarily ignoring download client {0} till {1} due to recent failures.", client.Definition.Name, downloadClientStatus.DisabledTill.Value.ToLocalTime());
                     continue;

src/NzbDrone.Core/Download/Pending/PendingReleaseService.cs

@@ -307,8 +307,7 @@ namespace NzbDrone.Core.Download.Pending
 
                 List<Book> books;
 
-                RemoteBook knownRemoteBook;
+                if (knownRemoteBooks != null && knownRemoteBooks.TryGetValue(release.Release.Title, out var knownRemoteBook))
-                if (knownRemoteBooks != null && knownRemoteBooks.TryGetValue(release.Release.Title, out knownRemoteBook))
                 {
                     books = knownRemoteBook.Books;
                 }

src/NzbDrone.Core/HealthCheck/HealthCheckService.cs

@@ -164,8 +164,7 @@ namespace NzbDrone.Core.HealthCheck
                 _isRunningHealthChecksAfterGracePeriod = false;
             }
 
-            IEventDrivenHealthCheck[] checks;
+            if (!_eventDrivenHealthChecks.TryGetValue(message.GetType(), out var checks))
-            if (!_eventDrivenHealthChecks.TryGetValue(message.GetType(), out checks))
             {
                 return;
             }

src/NzbDrone.Core/ImportLists/ImportListFactory.cs

@@ -61,8 +61,7 @@ namespace NzbDrone.Core.ImportLists
 
             foreach (var importList in importLists)
             {
-                ImportListStatus blockedImportListStatus;
+                if (blockedImportLists.TryGetValue(importList.Definition.Id, out var blockedImportListStatus))
-                if (blockedImportLists.TryGetValue(importList.Definition.Id, out blockedImportListStatus))
                 {
                     _logger.Debug("Temporarily ignoring import list {0} till {1} due to recent failures.", importList.Definition.Name, blockedImportListStatus.DisabledTill.Value.ToLocalTime());
                     continue;

src/NzbDrone.Core/Indexers/IndexerFactory.cs

@@ -88,8 +88,7 @@ namespace NzbDrone.Core.Indexers
 
             foreach (var indexer in indexers)
             {
-                IndexerStatus blockedIndexerStatus;
+                if (blockedIndexers.TryGetValue(indexer.Definition.Id, out var blockedIndexerStatus))
-                if (blockedIndexers.TryGetValue(indexer.Definition.Id, out blockedIndexerStatus))
                 {
                     _logger.Debug("Temporarily ignoring indexer {0} till {1} due to recent failures.", indexer.Definition.Name, blockedIndexerStatus.DisabledTill.Value.ToLocalTime());
                     continue;

src/NzbDrone.Core/Indexers/Newznab/NewznabRssParser.cs

@@ -129,10 +129,8 @@ namespace NzbDrone.Core.Indexers.Newznab
 
         protected override long GetSize(XElement item)
         {
-            long size;
-
             var sizeString = TryGetNewznabAttribute(item, "size");
-            if (!sizeString.IsNullOrWhiteSpace() && long.TryParse(sizeString, out size))
+            if (!sizeString.IsNullOrWhiteSpace() && long.TryParse(sizeString, out var size))
             {
                 return size;
             }

src/NzbDrone.Core/Indexers/Torznab/TorznabRssParser.cs

@@ -110,10 +110,8 @@ namespace NzbDrone.Core.Indexers.Torznab
 
         protected override long GetSize(XElement item)
         {
-            long size;
-
             var sizeString = TryGetTorznabAttribute(item, "size");
-            if (!sizeString.IsNullOrWhiteSpace() && long.TryParse(sizeString, out size))
+            if (!sizeString.IsNullOrWhiteSpace() && long.TryParse(sizeString, out var size))
             {
                 return size;
             }

src/NzbDrone.Core/Indexers/XElementExtensions.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
@@ -39,8 +39,7 @@ namespace NzbDrone.Core.Indexers
         {
             try
             {
-                DateTime result;
+                if (!DateTime.TryParse(dateString, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.AssumeUniversal, out var result))
-                if (!DateTime.TryParse(dateString, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.AssumeUniversal, out result))
                 {
                     dateString = RemoveTimeZoneRegex.Replace(dateString, "");
                     result = DateTime.Parse(dateString, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.AssumeUniversal);

src/NzbDrone.Core/Messaging/Events/EventAggregator.cs

@@ -76,8 +76,7 @@ namespace NzbDrone.Core.Messaging.Events
             EventSubscribers<TEvent> subscribers;
             lock (_eventSubscribers)
             {
-                object target;
+                if (!_eventSubscribers.TryGetValue(eventName, out var target))
-                if (!_eventSubscribers.TryGetValue(eventName, out target))
                 {
                     _eventSubscribers[eventName] = target = new EventSubscribers<TEvent>(_serviceFactory);
                 }

src/NzbDrone.Core/MetadataSource/Goodreads/Extensions/XmlExtensions.cs

@@ -73,13 +73,12 @@ namespace NzbDrone.Core.MetadataSource.Goodreads
                 // This regex corrects the format and hopefully doesn't mess anything else up...
                 var validDateFormat = Regex.Replace(value, @"(.*) ([+-]\d{2})(\d{2}) (.*)", "$1 $2:$3 $4");
 
-                DateTime localDate;
                 if (DateTime.TryParseExact(
-                    validDateFormat,
+                        validDateFormat,
-                    "ddd MMM dd HH:mm:ss zzz yyyy",
+                        "ddd MMM dd HH:mm:ss zzz yyyy",
-                    CultureInfo.InvariantCulture,
+                        CultureInfo.InvariantCulture,
-                    DateTimeStyles.None,
+                        DateTimeStyles.None,
-                    out localDate))
+                        out var localDate))
                 {
                     return localDate.ToUniversalTime();
                 }

src/NzbDrone.Core/MetadataSource/Goodreads/Resources/BookResource.cs

@@ -227,8 +227,7 @@ namespace NzbDrone.Core.MetadataSource.Goodreads
                 var shelfName = shelfElement?.Attribute("name")?.Value;
                 var shelfCountValue = shelfElement?.Attribute("count")?.Value;
 
-                int shelfCount = 0;
+                int.TryParse(shelfCountValue, out var shelfCount);
-                int.TryParse(shelfCountValue, out shelfCount);
                 return new KeyValuePair<string, int>(shelfName, shelfCount);
             });
 

src/NzbDrone.Core/MetadataSource/Goodreads/Resources/WorkResource.cs

@@ -144,9 +144,8 @@ namespace NzbDrone.Core.MetadataSource.Goodreads
 
                     foreach (var rating in ratings)
                     {
-                        int star = 0, count = 0;
+                        int.TryParse(rating[0], out var star);
-                        int.TryParse(rating[0], out star);
+                        int.TryParse(rating[1], out var count);
-                        int.TryParse(rating[1], out count);
 
                         ratingDistribution.Add(star, count);
                     }

src/NzbDrone.Core/Notifications/PushBullet/PushBulletProxy.cs

@@ -152,14 +152,13 @@ namespace NzbDrone.Core.Notifications.PushBullet
         private HttpRequestBuilder BuildDeviceRequest(string deviceId)
         {
             var requestBuilder = new HttpRequestBuilder(PUSH_URL).Post();
-            long integerId;
 
             if (deviceId.IsNullOrWhiteSpace())
             {
                 return requestBuilder;
             }
 
-            if (long.TryParse(deviceId, out integerId))
+            if (long.TryParse(deviceId, out var integerId))
             {
                 requestBuilder.AddFormParameter("device_id", integerId);
             }

src/NzbDrone.Core/Parser/Parser.cs

@@ -647,9 +647,8 @@ namespace NzbDrone.Core.Parser
             if (matches.Count != 0)
             {
                 var group = matches.OfType<Match>().Last().Groups["releasegroup"].Value;
-                int groupIsNumeric;
 
-                if (int.TryParse(group, out groupIsNumeric))
+                if (int.TryParse(group, out _))
                 {
                     return null;
                 }
@@ -792,8 +791,7 @@ namespace NzbDrone.Core.Parser
             bookTitle = RequestInfoRegex.Replace(bookTitle, "").Trim(' ');
             releaseVersion = RequestInfoRegex.Replace(releaseVersion, "").Trim(' ');
 
-            int releaseYear;
+            int.TryParse(matchCollection[0].Groups["releaseyear"].Value, out var releaseYear);
-            int.TryParse(matchCollection[0].Groups["releaseyear"].Value, out releaseYear);
 
             ParsedBookInfo result;
 
@@ -810,10 +808,8 @@ namespace NzbDrone.Core.Parser
 
             if (matchCollection[0].Groups["discography"].Success)
             {
-                int discStart;
+                int.TryParse(matchCollection[0].Groups["startyear"].Value, out var discStart);
-                int discEnd;
+                int.TryParse(matchCollection[0].Groups["endyear"].Value, out var discEnd);
-                int.TryParse(matchCollection[0].Groups["startyear"].Value, out discStart);
-                int.TryParse(matchCollection[0].Groups["endyear"].Value, out discEnd);
                 result.Discography = true;
 
                 if (discStart > 0 && discEnd > 0)
@@ -891,9 +887,7 @@ namespace NzbDrone.Core.Parser
 
         private static int ParseNumber(string value)
         {
-            int number;
+            if (int.TryParse(value, out var number))
-
-            if (int.TryParse(value, out number))
             {
                 return number;
             }

src/NzbDrone.Core/Profiles/Releases/TermMatcherService.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Text.RegularExpressions;
 using NzbDrone.Common.Cache;
 using NzbDrone.Core.Profiles.Releases.TermMatchers;
 
@@ -37,8 +36,7 @@ namespace NzbDrone.Core.Profiles.Releases
 
         private ITermMatcher CreateMatcherInternal(string term)
         {
-            Regex regex;
+            if (PerlRegexFactory.TryCreateRegex(term, out var regex))
-            if (PerlRegexFactory.TryCreateRegex(term, out regex))
             {
                 return new RegexTermMatcher(regex);
             }

src/NzbDrone.Mono.Test/DiskProviderTests/DiskProviderFixture.cs

@@ -57,8 +57,7 @@ namespace NzbDrone.Mono.Test.DiskProviderTests
         protected void SetWritePermissionsInternal(string path, bool writable, bool setgid)
         {
             // Remove Write permissions, we're still owner so we can clean it up, but we'll have to do that explicitly.
-            Stat stat;
+            Syscall.stat(path, out var stat);
-            Syscall.stat(path, out stat);
             FilePermissions mode = stat.st_mode;
 
             if (writable)

src/NzbDrone.Mono/Disk/DiskProvider.cs

@@ -489,9 +489,7 @@ namespace NzbDrone.Mono.Disk
                 return UNCHANGED_ID;
             }
 
-            uint userId;
+            if (uint.TryParse(user, out var userId))
-
-            if (uint.TryParse(user, out userId))
             {
                 return userId;
             }
@@ -513,9 +511,7 @@ namespace NzbDrone.Mono.Disk
                 return UNCHANGED_ID;
             }
 
-            uint groupId;
+            if (uint.TryParse(group, out var groupId))
-
-            if (uint.TryParse(group, out groupId))
             {
                 return groupId;
             }

src/NzbDrone.Mono/Disk/SymbolicLinkResolver.cs

@@ -83,9 +83,7 @@ namespace NzbDrone.Mono.Disk
 
         private bool TryFollowFirstSymbolicLink(ref string path)
         {
-            string[] dirs;
+            GetPathComponents(path, out var dirs, out var lastIndex);
-            int lastIndex;
-            GetPathComponents(path, out dirs, out lastIndex);
 
             if (lastIndex == 0)
             {

src/NzbDrone.Test.Common/LoggingTest.cs

@@ -23,8 +23,7 @@ namespace NzbDrone.Test.Common
             {
                 LogManager.Configuration = new LoggingConfiguration();
 
-                var logOutput = TestLogOutput.Console;
+                Enum.TryParse<TestLogOutput>(Environment.GetEnvironmentVariable("READARR_TESTS_LOG_OUTPUT"), out var logOutput);
-                Enum.TryParse<TestLogOutput>(Environment.GetEnvironmentVariable("READARR_TESTS_LOG_OUTPUT"), out logOutput);
 
                 RegisterSentryLogger();
 

src/NzbDrone.Update/UpdateApp.cs

@@ -100,8 +100,7 @@ namespace NzbDrone.Update
 
         private int ParseProcessId(string arg)
         {
-            int id;
+            if (!int.TryParse(arg, out var id) || id <= 0)
-            if (!int.TryParse(arg, out id) || id <= 0)
             {
                 throw new ArgumentOutOfRangeException(nameof(arg), "Invalid process ID");
             }

src/NzbDrone.Windows/Disk/DiskProvider.cs

@@ -87,8 +87,7 @@ namespace NzbDrone.Windows.Disk
                                                           PropagationFlags.InheritOnly,
                                                           controlType);
 
-                bool modified;
+                directorySecurity.ModifyAccessRule(AccessControlModification.Add, accessRule, out var modified);
-                directorySecurity.ModifyAccessRule(AccessControlModification.Add, accessRule, out modified);
 
                 if (modified)
                 {
@@ -137,11 +136,7 @@ namespace NzbDrone.Windows.Disk
                 folderName += '\\';
             }
 
-            ulong free = 0;
+            if (GetDiskFreeSpaceEx(folderName, out var free, out var dummy1, out var dummy2))
-            ulong dummy1 = 0;
-            ulong dummy2 = 0;
-
-            if (GetDiskFreeSpaceEx(folderName, out free, out dummy1, out dummy2))
             {
                 return (long)free;
             }
@@ -158,11 +153,7 @@ namespace NzbDrone.Windows.Disk
                 folderName += '\\';
             }
 
-            ulong total = 0;
+            if (GetDiskFreeSpaceEx(folderName, out var dummy1, out var total, out var dummy2))
-            ulong dummy1 = 0;
-            ulong dummy2 = 0;
-
-            if (GetDiskFreeSpaceEx(folderName, out dummy1, out total, out dummy2))
             {
                 return (long)total;
             }

src/Readarr.Http/ClientSchema/SchemaBuilder.cs

@@ -66,8 +66,7 @@ namespace Readarr.Http.ClientSchema
         {
             lock (_mappings)
             {
-                FieldMapping[] result;
+                if (!_mappings.TryGetValue(type, out var result))
-                if (!_mappings.TryGetValue(type, out result))
                 {
                     result = GetFieldMapping(type, "", v => v);