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ASP.NET
Application EndRequestappSettingsASHX HandlerConfigureContentTypeGlobal.asaxGlobal VariablesImage OutputIPMapGetMapPathMapRazorPagesRedirectRepeaterRequest.HeadersResponse.BinaryWriteResponse.WriteServerVariablesUseStaticFiles
C#
24-Hour Time Formats2D Array7-Zip ExecutableAbstractActionAggregateAggressiveInliningAllAlphabetize StringAlphanumeric SortAnagramAndAnyAppend, StringBuilderAppendFormatArgumentExceptionArrayArray.AsReadOnlyArray.BinarySearchArray.ClearArray.ConvertAllArray.CopyArray.CreateInstanceArray.ExistsArray FindArray.ForEachArray.IndexOfArray LengthArray MemoryArray PropertyArray.ResizeArray.ReverseArray SliceArray.SortArray.TrueForAllArrayListArrayPoolArraySegmentArrayTypeMismatch ExceptionAsASCII TableASCII TransformationAsEnumerableAsParallelasyncAttributeAverageBackgroundWorkerBaseBeepBenchmarkBetween, Before, AfterBigIntegerBinary RepresentationBinaryReaderBinarySearch ListBinaryWriterBitArrayBitConverterBitcountsBitVector32boolbool Arraybool.ParseBool Methodbool SortbreakBufferBufferedStreamButtonbyteByte ArrayCaesar CipherCapacityCaseCase, DictionaryCastsCastCast, IntCatchChangeChange CharactersCharChar ArrayChar Combinechar.IsDigitChar Testchar.ToLowerCharacter LiteralCharEnumeratorChartCheckBoxCheckedCheckedListBoxclassClear DictionaryCloneColorColor TableColorDialogCombine ArraysCombine Dictionary KeysComboBoxCommentCommon Elements, ListCompareToComparisonComplement, BitwiseCompound InterestCompress DataConcatConcurrentBagConcurrentDictionaryConcurrentQueueConditionalConsoleConsole ColorsConsole.ReadConsole.ReadKeyConsole.ReadLineConsole.SetOutConsole.WriteconstConstructorContainsContainsContainsKeyContainsValueContinueControlConvert ArrayList, ArrayConvert ArrayList, ListConvert Bool, IntConvert Bytes, MegabytesConvert Char Array, StringConvert Char, StringConvert Days, MonthsConvert DegreesConvert Dictionary, ListConvert Dictionary, StringConvert List, ArrayConvert List, DataTableConvert List, StringConvert Miles, KilometersConvert MillisecondsConvert NanosecondsConvert Array, StringConvert String, Byte ArrayConvert TimeSpan, LongCopy DictionaryCos, Sin, TanCountCount Array ElementsCount CharactersCount DictionaryCount LettersCSV FilesCustomized Dialog BoxDataColumnDataGridViewDataGridView Add RowsDataGridViewDataRowDataRow FieldDataSetDataSourceDataTableDataTable Compare RowsDataTable foreachDataTable RowChangedDataTable SelectDataViewDateTimeDateTime FormatDateTime.MinValueDateTime.MonthDateTime.NowDateTime.ParseDateTime SubtractDateTime.TodayDateTime.TryParseDateTimePickerDayOfWeekDebug.WritedecimalDecompress GZIPDefaultDefaultIfEmptydefine, undefDelegatesDescendingDestructorDialogResultDictionaryDictionary Binary FileDictionary EqualsDictionaryEntryDirectivesDirectoryDirectory.CreateDirectoryDirectory.GetFilesDirectory SizeDistinctDivideDivide, Powers of TwoDivideByZeroExceptionDllImport, DllexportDnsDoDomainUpDowndoubleDriveInfoDuplicate CharsDuplicate WordsDuplicatesDynamicElementAtOrDefaultEnumEnum ArrayEnum FlagsEnum.FormatEnum.GetNameEnum.ParseEnum ToStringEnumerable.RangeEnvironmentEventEventLogEvery Nth ElementExcelExceptExceptionExplicit, ImplicitExtensionExternFactory PatternFeet, InchesFibonacci SequenceFileFile.CopyFile.DeleteFile EqualsFile.ExistsFile.MoveFile.OpenFile.ReadAllBytesFile.ReadAllLinesFile.ReadAllTextFile.ReadLinesFile.ReplaceFileInfoFileInfo LengthFilename, DateTimeFileNotFoundExceptionFileStreamFileSystemWatcherFinallyFirstFirst WordsFirstOrDefaultFisher-Yates ShuffleFixedFlatten ArrayfloatFolderBrowserDialogFontFontDialogForForeachForeach ListFormFormatFromOADateFuncGC.CollectGeneric Class, MethodGetDirectoryNameGetEnumeratorGetHashCodeGetTypeGlobal VariableGotogroupGroupByGroupJoinGuidGZipStreamHashMapHashSetHashtableHtmlEncode, HtmlDecodeHtmlTextWriterHttpClientHttpUtilityHybridDictionaryIComparableIDictionaryIEnumerableIEqualityComparerifIf, Elif, Endifif, switchILIListImageImageListIncrementIncrement String NumberIndexerIndexOfIndexOfAnyIndexOutOfRangeExceptionInitialize ArrayInitialize ListInitializeComponentInsertInt, uintInt Arrayint.MaxValueInt16, Int32, Int64Integer Digit CountInterfaceInterlockedIntersectInvalidCastExceptionInvalidOperation ExceptionIOExceptionIOrderedEnumerableIsIsFixedSizeIsNullOrEmptyIsSortedJagged ArraysJoinJsonKeyCodeKeyNotFoundExceptionKeyValuePairLabelLambdaLastIndexOfLast, LastOrDefaultLazyletLevenshteinLine DirectiveLine CountLinkedListLinkLabelListList AddList AddRangeList ClearList ContainsList CopyToList EqualsList Find, ExistsList InsertList RemoveListBoxListDictionaryListViewLockLog, Log10LongLoop Over CharsLoop, String ArrayMain argsMapMaskedTextBoxMathMath.AbsMath.CeilingMath.EMath.FloorMath.Max, MinMath.PowMath.RoundMath.TruncateMax, MinMazeMemoizationMemoryFailPointMemoryMappedFileMemoryStreamMenuStripMessageBoxModuloMonthCalendarMultidimensional ArrayMultiMapMultiple LocalsMultiple Return ValuesMultiplyMutexNamed ParametersnamespaceNameValueCollectionNested ListnewNewLineNormalizeNotifyIconNotImplementedExceptionNullNull ArrayNull CoalescingNull ListNull StringsNullableNullReferenceExceptionNumber WordsObjectObject Arrayobject.ReferenceEqualsObsoleteOdbcConnectionOdd, EvenOfTypeOpenFileDialogOperatorOptional ParametersOr, BitwiseorderbyOrderBy, OrderByDescendingoutOutOfMemoryExceptionOverflowExceptionOverloadOverridePadRight, PadLeftPalindromeParagraph HTMLParallel.ForParallel.InvokeParametersParamsParsepartialPathPath.ChangeExtensionPath ExistsPath.GetExtensionPath.GetRandomFileNamePercentagePIPictureBoxPingPNG, WEBPPoint, PointFPosition WindowsPragma DirectivePredicatePretty DatePreviewKeyDownPrime NumberProcessProgressBarPropertyPropertyGridProtected, internalProtection ProxyPublic, privatePunctuationQueryableQueueRadioButtonRandomRandom Lowercase LetterRandom ParagraphsRandom StringReadLine, ReadLineAsyncReadonlyReadOnlyCollectionrecordRecursionRecursive File ListrefReflectionRegexRegex.EscapeRegex FileRegex GroupsRegex.MatchesRegex.Matches, QuoteRegex.ReplaceRegex.Replace String EndRegex.Replace NumbersRegex.Replace SpacesRegex.SplitRegex.Split NumbersRegex TrimRegexOptions.CompiledRegexOptions.IgnoreCaseRegexOptions.Multilineregion, endregionRemoveRemove CharRemove ElementRemove HTML TagsRemoveAllReplaceReserved FilenamesReturnReverseReverse StringReverse WordsRichTextBoxRightRNGCryptoServiceProviderROT13SaveFileDialogScraping HTML LinksSealedSeekSelectSelect CaseSelect NewSelectManySequenceEqualSerialize ListSet BitSettings.settingsShiftshort, ushortShuffle ArraySingle, DoubleSingleOrDefaultSizesizeofSkip, SkipWhileSleepSnippetsSortSort DateTime ListSort DictionarySort Files, SizesSort Ignore Lead CharsSort KeyValuePair ListSort ListSort Number StringsSort Strings, LengthSortedDictionarySortedListSortedSetSpanSpinWaitSplitSqlClientSqlCommandSqlCommandBuilderSqlConnectionSqlDataAdapterSqlDataReaderSqlParameterSqrtStackstackallocStackOverflowExceptionStartsWith, EndsWithStaticStatic ArrayStatic DictionaryStatic ListStatic RegexStatic StringStatusStripStopwatchStreamStreamReaderStreamReader ReadToEndStreamReader ReadToEndAsyncStreamWriterString AppendString CharsString Comparestring.ConcatString Constructorstring.CopyString CopyTostring.EmptyString EqualsString For-Loopstring.InternString InterpolationString IsUpperstring.JoinString LengthString ListString LiteralString Occurrence CountString SliceString SwitchStringBuilderStringBuilder EqualsStringBuilder ToStringStringComparisonStringDictionaryStringReaderStringWriterstructSubstringSuffixSumSwapSwitchSwitch CharSwitch EnumSystemTagTake, TakeWhileTaskTernary OperatorTextTextBoxTextBox.AppendTextTextChangedTextFieldParserTextInfoTextReaderTextWriterThisThread JoinThreadPoolThreadStartthrowTimerTimeSpanTimeZoneTitle HTMLToArrayToBase64StringToCharArrayToDictionaryTODO CommentsTokenToListToLookupToLowerToolTipToStringToTitleCaseTrackBarTreeTreeViewTrimTrimEnd, TrimStarttrueTruncate StringTryTryGetValueTupleTypeTypeInitialization ExceptiontypeofUnionUnreachableUnsafeUppercase First LetterUriusingusing AliasValueValueTupleValueTypeVarVariable InitializerVirtualVoidvolatileWeakReferenceWebBrowserWebClientWhereWhileWhitespaceWordWord CountXElementXmlReaderXmlTextReaderXmlTextWriterXmlWriterXORYieldZipZipFile
F#
ArrayConvertdictDowncast, upcastDuplicatesFailwithFileForFunif, elifIndexOfLetListMatchMathMeasureOdd, EvenOptionPrintfnRecordRecursionReplaceROT13SeqSortSplitStringTupleType
Golang
2D SliceArraybase64Between, Before, Afterbitsbufio.ScanBytesbytes.BufferBytesCaesar Cipherchancompressconstcontainer listContainsConvertConvert Map, SliceConvert Slice, StringConvert String, BoolConvert String, Rune SliceCopy FilecsvDuplicatesEqualFibonacciFieldsFileFilename, dateFirst WordsflagfmtForFprintFuncHasPrefixhtml templatehttpIfimageIndexInterfaceJoinJSONLenLines in FileListenAndServeLookup TablemapMap, String SlicesMathNilOdd, Evenos execos.Openos.RemovePaddingParseIntpathRandrangeRead Files, WaitGroupReadDirrecover, panic, deferRecursionRegexp FindRegexpReplaceReverse StringROT13SliceSort File SizesSortSplitSscan, SscanfString Literalstrings.Builderstrings.MapStructSubstringSuffixarraySwitchTimeToLower, ToUpperTrimunicode.IsSpaceWord CountWriteFile
Java
2D ArrayAbstractAnagramArrayArray LengthArrayDequeArrayList add, insertArrayList clearArrayList, intsArrayList, StringASCII TableBetween, Before, AfterbinarySearchbitCountBitSetBooleanBreakBufferedWriterCaesar CipherCalendarCaseCastChar ArraysChar Lookup TableCharactercharAtClassCollections.addAllCombine ArraysCompound InterestConsoleConstructorsContinueConvert ArrayList, StringConvert boolean to intChar Array, StringConvert DegreesConvert HashMap, ArrayListConvert String, Byte ArrayCount LettersDo-WhileDoubledouble TruncateDuplicate CharsDuplicatesEnumEnumMapExtendsFactory PatternFibonacciFileFilename DateFiles.CopyFilterfinalFindFirst WordsfloatForFormatgcHashMapHashSetHashtableIfImmutableListindexOfInitialize ArrayListInt ArraysInteger, maxInterfacesIsEmptyJoinJoinerLambdalastIndexOfLengthLine CountLinkedHashMapListMultimapMath.absMath.ceilMath.floorMathMath.maxMath.powMath.roundMethodsModuloMultiple Return ValuesNewlineObject ArraysObjectsOdd, EvenOptionalOverloadPackagePaddingPalindromeParseIntPrime NumberPriorityQueueProcessRandomRandom Lowercase LetterRangeRecursionreflectRegexregionMatchesRemove HTML TagsReplaceReturnReverse StringRightROT13ShuffleSortSplitSplittersqrtStackStackOverflowErrorStartsWith, endsWithStatic InitializerstaticStreamString ArraysString compareToString ConcatString equalsString OccurrenceString SwitchStringBufferStringBuilderStringTokenizerSubstringSumSuperSwitchTernary OperatorThistoCharArraytoLowerCaseTreeTreeMapTrimTruncate StringTryUppercase First LetterURLvalueOf StringVectorWhileWhitespaceWord Count
JavaScript
ArrayBenchmarkcharAtConcatencodeURIEqualsforfunctionindexOfInitialize ArrayInt32ArrayJSONLinked ListLookup TableMultiple ReturnsObjectparseIntreplaceSortsplitSubstringSwitchtoLowerCasetypeof
PHP
arrayConcatDateTimeenumFileforeachfunctionGeneratorif, elseifLoop CharsParse, intsortSplitString ListSubstringswitchtrimUppercase
Python
2D Array2D ListabsAnagramAnyArrayasciiASCII TableassertasyncioBetween, Before, AfterboolbytesClassclassmethodCompound InterestConsole, printConvertCopy ListCountercreate_indexCSVCursordatetimeDatetimeDefDeldictDictionaryDivmodDuplicatesEnumerateErrorEvery Nth ElementFibonacciFileFilename, DateFilterfindfind_onefindforformatfrozensetGeneratorGlobals, localsgzipIfImportInIndentationErrorIndexInitialize listIntisalnumiterItertoolsjoinjsonKeyErrorLambdaLenLimitList appendList ComprehensionList extendList forList insertLower, UpperMapmath.floorMathMax, minMazeMemoizeMongoClientNamedtupleNonenonlocal, globalNotNumbersNumPyord, chrPaddingPalindromepassPathpowPrime NumberpunctuationRandomrangere.match, searchreadlineRecursionRemove HTML TagsReplaceResize ListReturnReverse StringRightROT13RoundSetSlicesort, MongoDBsortSplitstartswith, endswithString Equalsstring ListString LiteralsStringIOStripsub, subnsubprocessSubstringSumSyntaxErrorTextwraptimeittranslateTruncate StringTupleTypeWhileWord CountZip
Ruby
2D ArrayArrayBetween, before, aftercaseChomp, strip, chopClassConcatConsoleConvertCopy ArrayCountDateTimeDuplicatesEach char, each lineExceptionFibonacciFile, IOFormatHashifIncludeindex, rindexInsert, deleteIteratorJoinLjust, rjust, centerMathMethodsNilNumbersrandRecursionRegexpReverseSetSortSplitString ArraysString LengthString Literalsub, gsubSubstringUpcase, downcaseWhile, Until
Rust
AnyArcArray, vecsAtomicUsizeBetween, Before, AfterBitwise Operatorsbool FunctionBoxBTreeMapCannot BorrowCastChunks, threadcollectCombine HashMap KeysCommandConcatConsole Colorsconst fnConst GenericscontainsConvert Bool, IntConvert BytesConvert HashMap, veccopy from sliceCount CharactersDebugdedup Vectorenumenv argsEvery Nth Elementextend from sliceFile createFilefillfindfnfor eachforget uncheckedHashMapifInitialize Arrayinto boxed sliceinto iteriterjoinlinesLookup u8Loop charsmapmatchMultiple Return ValuesmutMutexNested vecOnceLockOptionOut ParameterPackedparsePercentageprintlnpush u8 VecRc, RefCellRead BytesRead dirremovereplaceResultReverse StringROT13size ofskip, takeSort HashMapsortsplitstarts withstdinString ArrayString LengthString newstructSubstringswapto lowercaseto ownedtrait, impltransmute copyTupleUppercase FirstusizeVec EqualsvecWord Countwrapping add
Scala
2D ListArrayClassConvertDefDuplicatesExceptionForFormatIfindexOfInitialize ListIntListMapMatchOdd, EvenOptionPrintlnRangeRecursionRegexSetSliceSortedSplitStringStringBuilderStripTuplevar, valVector
Swift
2D ArrayAppendArray, DictionariesArrayASCII TableCaesar CipherCharactersClassCombine ArraysConvert Int to CharacterConvert String, BytesConvertDictionaryDuplicatesEnumErrorExtensionFibonacciFileFind StringsForFuncGuardhasPrefixIfInitialize ArraysinoutIntisEmptyJoinLengthlowercasedMathOdd, EvenOperatorsOptionalPaddingPrintPropertyRandomRangeRecursionRepeatReplaceReverse StringROT13SetSortSplitString LiteralsStructSubscriptSubstringSwitchTrimTupleVar, Let
VB.NET
2D ArraysAddressOfAlphanumeric SortArray.CopyArray.FindArray.IndexOfArray.ResizeArray.ReverseArrayArrayListAsync, AwaitAttributeBackgroundWorkerBenchmarksBetween, Before, AfterBinaryReaderBinarySearch ListBinaryWriterBooleanButtonByte ArrayByteByVal, ByRefCastChar ArrayCharChooseChrClassCompressConsoleConstContainsConvert ArrayList, ArrayChar Array, StringConvert Dictionary, ListConvert List, ArrayConvert List, StringConvert String Array, StringConvert String, Byte ArrayConvert String, IntegerCStrDataColumnDataGridViewDataRow FieldDataRowDataSetDataTable SelectDataTableDateTime FormatDateTime.NowDateTime.ParseDateTimeDecimalDictionaryDirectivesDo UntilDo WhileDoubleDuplicate CharsDuplicatesEnum.Parse, TryParseEnumEnumerable.RangeEventExcelExceptionExitExtension MethodFibonacci SequenceFile.CopyFile.ExistsFile ExtensionFile.ReadAllTextFile.ReadLinesFile SizeFileFilename, DateTimeFor Each, ForFormatFunc, Action, PredicateFunctionGoToHashSetHashtableHtmlEncodeHtmlTextWriterHttpClientIComparableIEnumerableIf ThenImageIndexOfInitialize ListInsertIntegerInterfaceIsNot, IsIsNullOrEmptyIteratorJoinKeyValuePairLambdaLastIndexOfLevenshteinLINQList Find, ExistsListLoop Over StringLSet, RSetLTrim, RTrimMath.AbsMath.Ceiling, FloorMath.Max, Math.MinMath.RoundMath.TruncateMessageBoxMid StatementModModuleMultiple Return ValuesMustInheritNamespaceNewLineNothingNullableNumbersObject ArrayOpenFileDialogOptionalPadLeft, PadRightParamArrayParsePathProcessPropertyPunctuationQueueRandom Lowercase LetterRandom StringRandomReDimRegex FileRegex.MatchesRegex.ReplaceRegex.SplitRegex.MatchRemove HTMLRemoveReplaceReverse StringROT13Select CaseSharedShellSleepSort DictionarySort Files, SizeSort ListSort Number StringsSortSortedListSortedSetSplitSqrtStackStartsWith, EndsWithStopwatchStreamReader ReadToEndStreamReaderStreamWriterString.CompareString.ConcatString ConstructorString.Copy, CopyToString.EmptyString.EqualsString LengthStringBuilderStructureSubSubstringSyncLockTextBoxTextInfoThreadPoolTimerTimeSpanTimeZoneToArrayToCharArrayToListToLowerToStringToTitleCaseTrimTrimEnd, TrimStartTruncate StringTupleUppercase FirstVal, AscVarTypeWebClientWithWithEventsWord CountXElementXmlReaderXmlWriterZipFile
WPF
BorderButtonCalendarCanvasCheckBoxComboBoxDataGridDatePickerDockPanelDoubleAnimationEllipseExpanderGridGroupBoxHorizontalAlignmentImageIsEnabledKeyDownLabelListViewMenuNamePasswordBoxProgressBarRadioButtonRectangleRenderTransformScrollViewerSliderStackPanelTabControlTextBoxToolBarToolTipTreeViewViewboxWebBrowserWindowsFormsHostWrapPanel
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Dot Net Perls is a collection of tested code examples. Pages are continually updated to stay current, with code correctness a top priority.
Sam Allen is passionate about computer languages. In the past, his work has been recommended by Apple and Microsoft and he has studied computers at a selective university in the United States.
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