• Avalanche
  • Avalanche.Core
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    • Avalanche.Localization
      • Introduction
      • Localization
      • LocalizationFile
      • LocalizationFiles
      • LocalizationFileSystem
      • LocalizationFileFormat
      • LocalizationLine
      • LocalizationLines
      • TemplateFormat
      • CultureProvider
      • FallbackCultureProvider
      • ResourceManager
      • LocalizationError
      • Microsoft.Extensions
        • Introduction
        • DependencyInjection
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        • ITextLocalizer
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        • AspNetCore
      • Pluralization
        • Introduction
        • Multiple plural parameters
        • Custom PluralRules
        • Invariant Culture
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        • IPluralNumber
        • IPluralRules
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      • Articles
        • Alphabet localization
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        • Emplacement
        • File localization
        • Text localization
    • Avalanche.Message
      • Introduction
      • IMessage
      • IMessageProvider
      • IMessageDescription
      • IMessageDescriptions
      • MessageLevel
      • Message printing
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      • Logging
      • Validation
      • Localization
    • Avalanche.StatusCode
      • Introduction
      • HResult
        • Introduction
        • HResult.Facilities
        • BasicMessages
        • RpcMessages
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      • System
        • Introduction
        • AccessControlMessages
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    • Avalanche.Template
      • Introduction
      • TemplateFormats
      • ITemplatePrintable
      • ITemplateFormatPrintable
      • ITemplateText
      • ITemplateBreakdown
      • ITemplateFormat
      • ITemplateFormats
      • Extract Arguments
      • Emplacement
    • Avalanche.Tokenizer
      • Introduction
      • IToken
      • ITokenizer
      • Tokenizers
    • Avalanche.Service
      • Introduction
      • Service
        • IService
        • Construction
        • Query
        • CancellationToken
        • CachePolicy
        • Cast
        • Scope
        • Dispose
      • Handler
        • Introduction
        • IHandler
        • Cancel
        • Recursion
        • Cyclicity
        • Delegates
        • Casting
        • Invokable
        • Handlers
      • Request
        • Introduction
        • IRequest
        • [Request]
        • [ContextParameter]
        • Print Tree
      • Dependency Injection
        • Introduction
        • ServiceRequest<T>
        • Handler
        • CachePolicy
        • CancellationToken
        • QueryLogger
      • Examples
        • Expression Example
        • Mapper Example
      • ServiceMessages
    • Avalanche.Writer
      • Introduction
      • Writer
      • Referer
      • TypeCast
      • DefaultConstructor
      • DelegateWriter
      • WriterPipe
      • ConstantWriter
      • PassthroughWriter
      • Context
      • WriterMessages
    • Avalanche.Accessor
      • Introduction
      • AccessorServices
      • List
        • ListAccessor
        • ListConstructor
        • ListDeconstructor
        • ListDefaultConstructor
        • ListGet
        • ListSet
        • ListAdd
        • ListInsert
        • ListClear
        • ListCount
        • ListIndexOf
        • ListRemoveAt
        • ListReferer
      • Map
        • MapAccessor
        • MapConstructor
        • MapDeconstructor
        • MapDefaultConstructor
        • MapSet
        • MapGet
        • MapRemove
        • MapClear
        • MapCount
        • MapReferer
      • Record
        • RecordAccessor
        • RecordConstructor
        • RecordDeconstructor
        • RecordDefaultConstructor
      • Field
        • FieldAccessor
        • FieldReader
        • FieldWriter
        • FieldReferer
      • Dependency Injection
        • Introduction
      • AccessorMessages
    • Avalanche.Emit
      • Introduction
      • TypeBuilder
      • ConstructorBuilder
      • MethodBuilder
      • PropertyBuilder
      • FieldBuilder
      • Emit
      • Utilities
    • Avalanche.DataType
      • Introduction
      • IDataTypeBase
      • IDataType
      • IRecordType
      • IFieldType
      • IUnionType
      • IListType
      • IMapType
      • IValueType
      • IEnumerationType
      • IIntegerType
      • IRealType
      • IStringType
      • IAnyType
      • DataTypeRequest
      • PrintTree
      • DataTypeMessages
    • Avalanche.FileSystem
      • Introduction
      • Abstractions
        • IFileSystem
          • IFileSystemBrowse
          • IFileSystemCreateDirectory
          • IFileSystemDelete
          • IFileSystemFileAttribute
          • IFileSystemMount
          • IFileSystemMove
          • IFileSystemObserve
          • IFileSystemOpen
        • IEvent
        • IEntry
        • IOption
        • IToken
      • FileSystem
      • VirtualFileSystem
      • MemoryFileSystem
      • EmbeddedFileSystem
      • HttpFileSystem
      • Decoration
      • IFileProvider
      • Events
      • Utilities
        • Dispose
        • File Scanner
        • Visit Tree
        • File Operation
    • Avalanche.Identity
      • Introduction
      • Identity
      • IdentityParts
      • IdentityInterner
      • IdentityComparer
      • Print Tree
      • IdentityAccessors
        • Introduction
        • TypeName
    • Avalanche.Utilities
      • Introduction
      • Collections
        • Tuples
        • StructList
        • ArrayList
        • BijectionMap
        • LocakableDictionary
        • LockableList
        • MapList
        • Pipe
        • RingQueue
        • EnumerableExtensions
        • TupleUtilities
        • ArrayUtilities
      • Comparers
        • IGraphComparer
        • IGraphComparable
        • AlphaNumericComparer
        • EnumerableComparer
        • EnumerableGraphComparer
        • ReferenceComparer
        • KeyValuePairComparer
        • DefaultComparerProvider
        • RecordComparer
      • Cloners
        • ICloner
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        • IGraphCloneable
        • EnumerableCloner
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        • PassthroughCloner
        • RecordCloner
        • ClonerProvider
      • Dispose
        • IDisposeAttachable
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      • Provider
        • Introduction
        • ProviderBase
        • Delegate
        • Concatenation
        • Cache
        • ResultCapture
        • AsReadOnly
        • AsService
      • Record
        • IRecordDescription
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          • RecordCreate
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        • FieldDelegates
          • FieldRead
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          • RecreateWith
          • IFieldDelegates
      • String
        • IEscaper
        • UnicodeString
      • Miscellaneous
        • IIdGenerator
        • Permutation
        • IReadOnly
        • IUserDataContainer
        • Void
    • Avalanche.Core
      • License
      • Order

    ListReferer

    Referer that refers to an element of a list implements interface IRefererBase<(Element, long), List>.

    ListReferer.Create(type) creates implementation for lists that implement IList<T>.

    // Create referer
    IReferer<(List<int>, long), int> referer = (IReferer<(List<int>, long), int>)ListReferer.Create(typeof(List<int>));
    

    Referer gets a reference to an element.

    // Create list
    List<int> list = new List<int> { 1, 2, 3 };
    // Get pointer to index '2'
    ref int elementPointer = ref referer.GetReference((list, 2));
    // Read
    WriteLine(elementPointer);
    // Write
    elementPointer = 100;
    // Read
    WriteLine(list[2]);
    

    ListReferer.Create(type) creates implementation for arrays as well.

    // Create referer
    IReferer<(int[], long), int> referer = (IReferer<(int[], long), int>)ListReferer.Create(typeof(int[]));
    

    Array elements are referable as well.

    // Create list
    int[] array = new int[] { 4, 5, 6 };
    // Get pointer to index '2'
    ref int elementPointer = ref referer.GetReference((array, 2));
    // Read
    WriteLine(elementPointer);
    // Write
    elementPointer = 100;
    // Read
    WriteLine(array[2]);
    

    ListRefererRequest is request to query a list-element-referer from service.

    // Create service
    IService service = Services.Create((ServiceHandlers.Instance, AccessorHandlers.Instance), CachePolicies.Default);
    // Create request
    IRequest request = new ListRefererRequest(typeof(List<int>));
    // Create referer
    IReferer<(List<int>, long), int> referer = service.GetRequired<IRequest, IReferer<(List<int>, long), int>>(request);
    

    Full Example

    Full example
    using System.Collections.Generic;
    using Avalanche.Accessor;
    using Avalanche.Accessor.List;
    using Avalanche.Service;
    using Avalanche.Writer;
    using static System.Console;
    
    class listreferer
    {
        public static void Run()
        {
    
            {
                // <01>
                // Create referer
                IReferer<(List<int>, long), int> referer = (IReferer<(List<int>, long), int>)ListReferer.Create(typeof(List<int>));
                // </01>
                // <02>
                // Create list
                List<int> list = new List<int> { 1, 2, 3 };
                // Get pointer to index '2'
                ref int elementPointer = ref referer.GetReference((list, 2));
                // Read
                WriteLine(elementPointer);
                // Write
                elementPointer = 100;
                // Read
                WriteLine(list[2]);
                // </02>
            }
    
            {
                // <11>
                // Create referer
                IReferer<(int[], long), int> referer = (IReferer<(int[], long), int>)ListReferer.Create(typeof(int[]));
                // </11>
                // <12>
                // Create list
                int[] array = new int[] { 4, 5, 6 };
                // Get pointer to index '2'
                ref int elementPointer = ref referer.GetReference((array, 2));
                // Read
                WriteLine(elementPointer);
                // Write
                elementPointer = 100;
                // Read
                WriteLine(array[2]);
                // </12>
            }
    
            {
                // <21>
                // Create service
                IService service = Services.Create((ServiceHandlers.Instance, AccessorHandlers.Instance), CachePolicies.Default);
                // Create request
                IRequest request = new ListRefererRequest(typeof(List<int>));
                // Create referer
                IReferer<(List<int>, long), int> referer = service.GetRequired<IRequest, IReferer<(List<int>, long), int>>(request);
                // </21>
                // Create list
                List<int> list = new List<int> { 1, 2, 3 };
                // Get pointer to index '2'
                ref int elementPointer = ref referer.GetReference((list, 2));
                // Read
                WriteLine(elementPointer);
                // Write
                elementPointer = 100;
                // Read
                WriteLine(list[2]);
            }
    
        }
    }
    
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