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Showing content from https://dotnet.github.io/dotNext/api/DotNext.UserDataStorage.html below:

Struct UserDataStorage | .NEXT

Struct UserDataStorage

Provides access to user data associated with the object.

Namespace: DotNext Assembly: DotNext.dll Syntax

public readonly ref struct UserDataStorage

Properties | Edit this page View Source IsValid

Gets a value indicating that this storage is valid.

Declaration

public bool IsValid { get; }

Property Value Methods | Edit this page View Source Capture()

Extracts a copy of all custom data in this storage.

Declaration

public IReadOnlyDictionary<string, object> Capture()

Returns | Edit this page View Source CopyTo(object)

Replaces user data of the object with the copy of the current one.

Declaration

public void CopyTo(object obj)

Parameters Type Name Description object obj

The object which user data has to be replaced with the copy of the current one.

| Edit this page View Source Equals(object?)

Determines whether this storage is attached to the given object.

Declaration

public override bool Equals(object? other)

Parameters Type Name Description object other

Other object to check.

Returns Type Description bool

true, if this storage is attached to other object; otherwise, false.

Overrides | Edit this page View Source GetHashCode()

Computes identity hash code for this storage.

Declaration

public override int GetHashCode()

Returns Type Description int

The identity hash code for this storage.

Overrides | Edit this page View Source GetOrSet<TValue>(UserDataSlot<TValue>)

Gets existing user data or creates a new data and return it.

Declaration

public TValue GetOrSet<TValue>(UserDataSlot<TValue> slot) where TValue : notnull, new()

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

Returns Type Description TValue

The data associated with the slot.

Type Parameters Name Description TValue

The type of user data associated with arbitrary object.

Exceptions | Edit this page View Source GetOrSet<TValue>(UserDataSlot<TValue>, delegate*<TValue>)

Gets existing user data or creates a new data and return it.

Declaration

[CLSCompliant(false)]
public TValue GetOrSet<TValue>(UserDataSlot<TValue> slot, delegate*<TValue> valueFactory)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

delegate*<TValue> valueFactory

The value supplier which is called when no user data exists.

Returns Type Description TValue

The data associated with the slot.

Type Parameters Name Description TValue

The type of user data associated with arbitrary object.

Exceptions | Edit this page View Source GetOrSet<TValue>(UserDataSlot<TValue>, Func<TValue>)

Gets existing user data or creates a new data and return it.

Declaration

public TValue GetOrSet<TValue>(UserDataSlot<TValue> slot, Func<TValue> valueFactory)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

Func<TValue> valueFactory

The value supplier which is called when no user data exists.

Returns Type Description TValue

The data associated with the slot.

Type Parameters Name Description TValue

The type of user data associated with arbitrary object.

Exceptions | Edit this page View Source GetOrSet<TBase, T>(UserDataSlot<TBase>)

Gets existing user data or creates a new data and return it.

Declaration

public TBase GetOrSet<TBase, T>(UserDataSlot<TBase> slot) where T : class, TBase, new()

Parameters Type Name Description UserDataSlot<TBase> slot

The slot identifying user data.

Returns Type Description TBase

The data associated with the slot.

Type Parameters Name Description TBase

The type of user data associated with arbitrary object.

T

The derived type with public parameterless constructor.

Exceptions | Edit this page View Source GetOrSet<TValue, TFactory>(UserDataSlot<TValue>, TFactory)

Gets existing user data or creates a new data and return it.

Declaration

public TValue GetOrSet<TValue, TFactory>(UserDataSlot<TValue> slot, TFactory valueFactory) where TFactory : struct, ISupplier<TValue>

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

TFactory valueFactory

The value supplier which is called when no user data exists.

Returns Type Description TValue

The data associated with the slot.

Type Parameters Name Description TValue

The type of user data associated with arbitrary object.

TFactory

The type of the factory.

Exceptions | Edit this page View Source GetOrSet<T, TValue>(UserDataSlot<TValue>, T, delegate*<T, TValue>)

Gets existing user data or creates a new data and return it.

Declaration

[CLSCompliant(false)]
public TValue GetOrSet<T, TValue>(UserDataSlot<TValue> slot, T arg, delegate*<T, TValue> valueFactory)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

T arg

The argument to be passed into factory.

delegate*<T, TValue> valueFactory

The value supplier which is called when no user data exists.

Returns Type Description TValue

The data associated with the slot.

Type Parameters Name Description T

The type of the argument to be passed into factory.

TValue

The type of user data associated with arbitrary object.

Exceptions | Edit this page View Source GetOrSet<T, TValue>(UserDataSlot<TValue>, T, Func<T, TValue>)

Gets existing user data or creates a new data and return it.

Declaration

public TValue GetOrSet<T, TValue>(UserDataSlot<TValue> slot, T arg, Func<T, TValue> valueFactory)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

T arg

The argument to be passed into factory.

Func<T, TValue> valueFactory

The value supplier which is called when no user data exists.

Returns Type Description TValue

The data associated with the slot.

Type Parameters Name Description T

The type of the argument to be passed into factory.

TValue

The type of user data associated with arbitrary object.

Exceptions | Edit this page View Source GetOrSet<T1, T2, TValue>(UserDataSlot<TValue>, T1, T2, delegate*<T1, T2, TValue>)

Gets existing user data or creates a new data and return it.

Declaration

[CLSCompliant(false)]
public TValue GetOrSet<T1, T2, TValue>(UserDataSlot<TValue> slot, T1 arg1, T2 arg2, delegate*<T1, T2, TValue> valueFactory)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

T1 arg1

The first argument to be passed into factory.

T2 arg2

The second argument to be passed into factory.

delegate*<T1, T2, TValue> valueFactory

The value supplier which is called when no user data exists.

Returns Type Description TValue

The data associated with the slot.

Type Parameters Name Description T1

The type of the first argument to be passed into factory.

T2

The type of the second argument to be passed into factory.

TValue

The type of user data associated with arbitrary object.

Exceptions | Edit this page View Source GetOrSet<T1, T2, TValue>(UserDataSlot<TValue>, T1, T2, Func<T1, T2, TValue>)

Gets existing user data or creates a new data and return it.

Declaration

public TValue GetOrSet<T1, T2, TValue>(UserDataSlot<TValue> slot, T1 arg1, T2 arg2, Func<T1, T2, TValue> valueFactory)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

T1 arg1

The first argument to be passed into factory.

T2 arg2

The second argument to be passed into factory.

Func<T1, T2, TValue> valueFactory

The value supplier which is called when no user data exists.

Returns Type Description TValue

The data associated with the slot.

Type Parameters Name Description T1

The type of the first argument to be passed into factory.

T2

The type of the second argument to be passed into factory.

TValue

The type of user data associated with arbitrary object.

Exceptions | Edit this page View Source Get<TValue>(UserDataSlot<TValue>)

Gets user data.

Declaration

public TValue? Get<TValue>(UserDataSlot<TValue> slot)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

Returns Type Description TValue

User data; or default(V) if there is no user data associated with slot.

Type Parameters Name Description TValue

Type of data.

Exceptions | Edit this page View Source Get<TValue>(UserDataSlot<TValue>, TValue?)

Gets user data.

Declaration

public TValue? Get<TValue>(UserDataSlot<TValue> slot, TValue? defaultValue)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

TValue defaultValue

Default value to be returned if no user data contained in this collection.

Returns Type Description TValue

User data.

Type Parameters Name Description TValue

Type of data.

Exceptions | Edit this page View Source Remove<TValue>(UserDataSlot<TValue>)

Removes user data slot.

Declaration

public bool Remove<TValue>(UserDataSlot<TValue> slot)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

Returns Type Description bool

true, if data is removed from this collection.

Type Parameters Name Description TValue

The type of user data.

Exceptions | Edit this page View Source Remove<TValue>(UserDataSlot<TValue>, out TValue)

Removes user data slot.

Declaration

public bool Remove<TValue>(UserDataSlot<TValue> slot, out TValue userData)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

TValue userData

Remove user data.

Returns Type Description bool

true, if data is removed from this collection.

Type Parameters Name Description TValue

The type of user data.

Exceptions | Edit this page View Source Set<TValue>(UserDataSlot<TValue>, TValue)

Sets user data.

Declaration

public void Set<TValue>(UserDataSlot<TValue> slot, TValue userData)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

TValue userData

User data to be saved in this collection.

Type Parameters Name Description TValue

Type of data.

Exceptions | Edit this page View Source ToString()

Returns textual representation of this storage.

Declaration

public override string? ToString()

Returns Type Description string

The textual representation of this storage.

Overrides | Edit this page View Source TryGet<TValue>(UserDataSlot<TValue>, out TValue)

Tries to get user data.

Declaration

public bool TryGet<TValue>(UserDataSlot<TValue> slot, out TValue userData)

Parameters Type Name Description UserDataSlot<TValue> slot

The slot identifying user data.

TValue userData

User data.

Returns Type Description bool

true, if user data slot exists in this collection.

Type Parameters Name Description TValue

Type of data.

Exceptions Operators | Edit this page View Source operator ==(UserDataStorage, UserDataStorage)

Determines whether two stores are for the same object.

Declaration

public static bool operator ==(UserDataStorage first, UserDataStorage second)

Parameters Returns Type Description bool

true, if two stores are for the same object; otherwise, false.

| Edit this page View Source operator !=(UserDataStorage, UserDataStorage)

Determines whether two stores are not for the same object.

Declaration

public static bool operator !=(UserDataStorage first, UserDataStorage second)

Parameters Returns Type Description bool

true, if two stores are not for the same object; otherwise, false.

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