rspec/rules/S1172/vbnet/rule.adoc

== Why is this an issue?

Unused parameters are misleading. Whatever the values passed to such parameters, the behavior will be the same.


This rule raises an issue when a ``++private++`` procedure of a ``++Class++``, ``++Module++`` or ``++Structure++`` takes a parameter without using it.

=== Noncompliant code example

[source,vbnet]
----
Private Sub DoSomething(ByVal a As Integer, ByVal b as Integer) ' "b" is unused
    Compute(a)
End Sub

Private Function DoSomething2(ByVal a As Integer, ByVal b As Integer) As Integer ' "a" is unused 
    Compute(b)
    Return b
End Function
----

=== Compliant solution

[source,vbnet]
----
Private Sub DoSomething(ByVal a As Integer)
    Compute(a)
End Sub

Private Function DoSomething2(ByVal b As Integer) As Integer
    Compute(b)
    Return b
End Function
----

=== Exceptions

This rule doesn't raise any issue in the following contexts:


* Procedures decorated with attributes.
* Empty procedures.
* Procedures which only throw ``++NotImplementedException++``.
* Main methods.
* ``++virtual++``, ``++override++`` procedures.
* Interface implementations.
* Event handlers.


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'''
== Implementation Specification
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include::../message.adoc[]

'''
== Comments And Links
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include::../comments-and-links.adoc[]
endif::env-github,rspecator-view[]