Class ShieldResultExtensions

Namespace

Kevlar

Assembly

Kevlar.dll

Result-handling clauses for Shield<TResult> chains whose result is a reference type. They are extension methods because only an extension method can constrain TResult: a method declared on Shield<TResult> itself inherits whatever the shield was built for, so a null clause written there would compile for int too.

public static class ShieldResultExtensions

Inheritance

object

ShieldResultExtensions

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Methods

OrResultIsNull<TResult>(ShieldBuilder<TResult>)

Returns a new builder that also handles null results.

public static ShieldBuilder<TResult> OrResultIsNull<TResult>(this ShieldBuilder<TResult> builder) where TResult : class?

Parameters

builder ShieldBuilder<TResult>

Returns

ShieldBuilder<TResult>

Type Parameters

TResult

Remarks

Prefer this to OrResultIsDefault() whenever the result is a reference type; see WhenResultIsNull<TResult>(Shield<TResult>).

WhenResultIsNull<TResult>(Shield<TResult>)

Starts a handling clause for null results. Use WithDefaultHandling() to return to default handling.

public static ShieldBuilder<TResult> WhenResultIsNull<TResult>(this Shield<TResult> shield) where TResult : class?

Parameters

shield Shield<TResult>

Returns

ShieldBuilder<TResult>

Type Parameters

TResult

Remarks

Prefer this to WhenResultIsDefault() whenever the result is a reference type: both match the same values, but this one cannot be written for a value type whose default — 0, false — is usually a legitimate result rather than a failure.