Class TapExtensions

Namespace

FunctionalDdd

Assembly

FunctionalDdd.RailwayOrientedProgramming.dll

Provides extension methods for executing side effects on successful Results without changing the Result.

public static class TapExtensions

Inheritance

object

TapExtensions

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Examples

var result = GetUser(id)
    .Tap(user => _logger.LogInformation("Found user: {Name}", user.Name))
    .Bind(user => ValidateUser(user))
    .Tap(() => _metrics.IncrementCounter("user.validated"));

Remarks

Tap is useful for performing side effects (like logging, auditing, or debugging) in a functional pipeline without breaking the chain. The action is only executed if the Result is successful, and the original Result is always returned unchanged. This allows you to "peek" at values flowing through the pipeline.

Methods

Tap<TValue>(Result<TValue>, Action)

Executes the given action if the result is a success. Returns the original result unchanged.

public static Result<TValue> Tap<TValue>(this Result<TValue> result, Action action)

Parameters

result Result<TValue>

The result to tap.

action Action

The action to execute if the result is successful.

Returns

Result<TValue>

The original result unchanged.

Type Parameters

TValue

Type of the result value.

Tap<TValue>(Result<TValue>, Action<TValue>)

Executes the given action with the value if the result is a success. Returns the original result unchanged.

public static Result<TValue> Tap<TValue>(this Result<TValue> result, Action<TValue> action)

Parameters

result Result<TValue>

The result to tap.

action Action<TValue>

The action to execute with the value if the result is successful.

Returns

Result<TValue>

The original result unchanged.

Type Parameters

TValue

Type of the result value.