Class EnsureExtensionsAsync

Namespace

FunctionalDdd

Assembly

FunctionalDdd.RailwayOrientedProgramming.dll

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static class EnsureExtensionsAsync

Inheritance

object

EnsureExtensionsAsync

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Examples

var ct = cancellationToken;
await result.EnsureAsync(
    value => ValidateAsync(value, ct),
    Error.Validation("Invalid")
);

Remarks

Users should capture CancellationToken in their lambda closures when cancellation support is needed.

Methods

EnsureAsync<TOk>(Result<TOk>, Func<Task<Result<TOk>>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<Task<Result<TOk>>> predicate)

Parameters

result Result<TOk>

predicate Func<Task<Result<TOk>>>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Result<TOk>, Func<Task<bool>>, Error)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<Task<bool>> predicate, Error errorMessage)

Parameters

result Result<TOk>

predicate Func<Task<bool>>

errorMessage Error

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Result<TOk>, Func<ValueTask<Result<TOk>>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<ValueTask<Result<TOk>>> predicate)

Parameters

result Result<TOk>

predicate Func<ValueTask<Result<TOk>>>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Result<TOk>, Func<ValueTask<bool>>, Error)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<ValueTask<bool>> predicate, Error errorMessage)

Parameters

result Result<TOk>

predicate Func<ValueTask<bool>>

errorMessage Error

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Result<TOk>, Func<TOk, Task<Result<TOk>>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<TOk, Task<Result<TOk>>> predicate)

Parameters

result Result<TOk>

predicate Func<TOk, Task<Result<TOk>>>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Result<TOk>, Func<TOk, Task<bool>>, Error)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<TOk, Task<bool>> predicate, Error errorMessage)

Parameters

result Result<TOk>

predicate Func<TOk, Task<bool>>

errorMessage Error

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Result<TOk>, Func<TOk, Task<bool>>, Func<TOk, Error>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<TOk, Task<bool>> predicate, Func<TOk, Error> errorPredicate)

Parameters

result Result<TOk>

predicate Func<TOk, Task<bool>>

errorPredicate Func<TOk, Error>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Result<TOk>, Func<TOk, Task<bool>>, Func<TOk, Task<Error>>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<TOk, Task<bool>> predicate, Func<TOk, Task<Error>> errorPredicate)

Parameters

result Result<TOk>

predicate Func<TOk, Task<bool>>

errorPredicate Func<TOk, Task<Error>>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Result<TOk>, Func<TOk, ValueTask<Result<TOk>>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<TOk, ValueTask<Result<TOk>>> predicate)

Parameters

result Result<TOk>

predicate Func<TOk, ValueTask<Result<TOk>>>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Result<TOk>, Func<TOk, ValueTask<bool>>, Error)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<TOk, ValueTask<bool>> predicate, Error errorMessage)

Parameters

result Result<TOk>

predicate Func<TOk, ValueTask<bool>>

errorMessage Error

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Result<TOk>, Func<TOk, ValueTask<bool>>, Func<TOk, Error>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<TOk, ValueTask<bool>> predicate, Func<TOk, Error> errorPredicate)

Parameters

result Result<TOk>

predicate Func<TOk, ValueTask<bool>>

errorPredicate Func<TOk, Error>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Result<TOk>, Func<TOk, ValueTask<bool>>, Func<TOk, ValueTask<Error>>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this Result<TOk> result, Func<TOk, ValueTask<bool>> predicate, Func<TOk, ValueTask<Error>> errorPredicate)

Parameters

result Result<TOk>

predicate Func<TOk, ValueTask<bool>>

errorPredicate Func<TOk, ValueTask<Error>>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Task<Result<TOk>>, Func<Result<TOk>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Task<Result<TOk>> resultTask, Func<Result<TOk>> predicate)

Parameters

resultTask Task<Result<TOk>>

predicate Func<Result<TOk>>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Task<Result<TOk>>, Func<bool>, Error)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Task<Result<TOk>> resultTask, Func<bool> predicate, Error errorMessage)

Parameters

resultTask Task<Result<TOk>>

predicate Func<bool>

errorMessage Error

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Task<Result<TOk>>, Func<Task<Result<TOk>>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Task<Result<TOk>> resultTask, Func<Task<Result<TOk>>> predicate)

Parameters

resultTask Task<Result<TOk>>

predicate Func<Task<Result<TOk>>>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Task<Result<TOk>>, Func<TOk, Result<TOk>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Task<Result<TOk>> resultTask, Func<TOk, Result<TOk>> predicate)

Parameters

resultTask Task<Result<TOk>>

predicate Func<TOk, Result<TOk>>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Task<Result<TOk>>, Func<TOk, bool>, Error)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Task<Result<TOk>> resultTask, Func<TOk, bool> predicate, Error errorMessage)

Parameters

resultTask Task<Result<TOk>>

predicate Func<TOk, bool>

errorMessage Error

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Task<Result<TOk>>, Func<TOk, bool>, Func<TOk, Error>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Task<Result<TOk>> resultTask, Func<TOk, bool> predicate, Func<TOk, Error> errorPredicate)

Parameters

resultTask Task<Result<TOk>>

predicate Func<TOk, bool>

errorPredicate Func<TOk, Error>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Task<Result<TOk>>, Func<TOk, bool>, Func<TOk, Task<Error>>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Task<Result<TOk>> resultTask, Func<TOk, bool> predicate, Func<TOk, Task<Error>> errorPredicate)

Parameters

resultTask Task<Result<TOk>>

predicate Func<TOk, bool>

errorPredicate Func<TOk, Task<Error>>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Task<Result<TOk>>, Func<TOk, Task<Result<TOk>>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Task<Result<TOk>> resultTask, Func<TOk, Task<Result<TOk>>> predicate)

Parameters

resultTask Task<Result<TOk>>

predicate Func<TOk, Task<Result<TOk>>>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Task<Result<TOk>>, Func<TOk, Task<bool>>, Error)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Task<Result<TOk>> resultTask, Func<TOk, Task<bool>> predicate, Error errors)

Parameters

resultTask Task<Result<TOk>>

predicate Func<TOk, Task<bool>>

errors Error

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Task<Result<TOk>>, Func<TOk, Task<bool>>, Func<TOk, Error>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Task<Result<TOk>> resultTask, Func<TOk, Task<bool>> predicate, Func<TOk, Error> errorPredicate)

Parameters

resultTask Task<Result<TOk>>

predicate Func<TOk, Task<bool>>

errorPredicate Func<TOk, Error>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(Task<Result<TOk>>, Func<TOk, Task<bool>>, Func<TOk, Task<Error>>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static Task<Result<TOk>> EnsureAsync<TOk>(this Task<Result<TOk>> resultTask, Func<TOk, Task<bool>> predicate, Func<TOk, Task<Error>> errorPredicate)

Parameters

resultTask Task<Result<TOk>>

predicate Func<TOk, Task<bool>>

errorPredicate Func<TOk, Task<Error>>

Returns

Task<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(ValueTask<Result<TOk>>, Func<Result<TOk>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this ValueTask<Result<TOk>> resultTask, Func<Result<TOk>> predicate)

Parameters

resultTask ValueTask<Result<TOk>>

predicate Func<Result<TOk>>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(ValueTask<Result<TOk>>, Func<bool>, Error)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this ValueTask<Result<TOk>> resultTask, Func<bool> predicate, Error errorMessage)

Parameters

resultTask ValueTask<Result<TOk>>

predicate Func<bool>

errorMessage Error

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(ValueTask<Result<TOk>>, Func<ValueTask<Result<TOk>>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this ValueTask<Result<TOk>> resultTask, Func<ValueTask<Result<TOk>>> predicate)

Parameters

resultTask ValueTask<Result<TOk>>

predicate Func<ValueTask<Result<TOk>>>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(ValueTask<Result<TOk>>, Func<TOk, Result<TOk>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this ValueTask<Result<TOk>> resultTask, Func<TOk, Result<TOk>> predicate)

Parameters

resultTask ValueTask<Result<TOk>>

predicate Func<TOk, Result<TOk>>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(ValueTask<Result<TOk>>, Func<TOk, bool>, Error)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this ValueTask<Result<TOk>> resultTask, Func<TOk, bool> predicate, Error errorMessage)

Parameters

resultTask ValueTask<Result<TOk>>

predicate Func<TOk, bool>

errorMessage Error

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(ValueTask<Result<TOk>>, Func<TOk, bool>, Func<TOk, Error>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this ValueTask<Result<TOk>> resultTask, Func<TOk, bool> predicate, Func<TOk, Error> errorPredicate)

Parameters

resultTask ValueTask<Result<TOk>>

predicate Func<TOk, bool>

errorPredicate Func<TOk, Error>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(ValueTask<Result<TOk>>, Func<TOk, bool>, Func<TOk, ValueTask<Error>>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this ValueTask<Result<TOk>> resultTask, Func<TOk, bool> predicate, Func<TOk, ValueTask<Error>> errorPredicate)

Parameters

resultTask ValueTask<Result<TOk>>

predicate Func<TOk, bool>

errorPredicate Func<TOk, ValueTask<Error>>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(ValueTask<Result<TOk>>, Func<TOk, ValueTask<Result<TOk>>>)

Returns a new failure result if the predicate is a failure result. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this ValueTask<Result<TOk>> resultTask, Func<TOk, ValueTask<Result<TOk>>> predicate)

Parameters

resultTask ValueTask<Result<TOk>>

predicate Func<TOk, ValueTask<Result<TOk>>>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(ValueTask<Result<TOk>>, Func<TOk, ValueTask<bool>>, Error)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this ValueTask<Result<TOk>> resultTask, Func<TOk, ValueTask<bool>> predicate, Error errors)

Parameters

resultTask ValueTask<Result<TOk>>

predicate Func<TOk, ValueTask<bool>>

errors Error

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(ValueTask<Result<TOk>>, Func<TOk, ValueTask<bool>>, Func<TOk, Error>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this ValueTask<Result<TOk>> resultTask, Func<TOk, ValueTask<bool>> predicate, Func<TOk, Error> errorPredicate)

Parameters

resultTask ValueTask<Result<TOk>>

predicate Func<TOk, ValueTask<bool>>

errorPredicate Func<TOk, Error>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk

EnsureAsync<TOk>(ValueTask<Result<TOk>>, Func<TOk, ValueTask<bool>>, Func<TOk, ValueTask<Error>>)

Returns a new failure result if the predicate is false. Otherwise returns the starting result.

public static ValueTask<Result<TOk>> EnsureAsync<TOk>(this ValueTask<Result<TOk>> resultTask, Func<TOk, ValueTask<bool>> predicate, Func<TOk, ValueTask<Error>> errorPredicate)

Parameters

resultTask ValueTask<Result<TOk>>

predicate Func<TOk, ValueTask<bool>>

errorPredicate Func<TOk, ValueTask<Error>>

Returns

ValueTask<Result<TOk>>

Type Parameters

TOk