Calling the ``+``, ``++-++``, ``++~++`` or ``++NOT++`` prefix operator twice does nothing: the second invocation undoes the first. Such mistakes are typically caused by accidentally double-tapping the key in question without noticing.


Either this is a bug, if the operator was actually meant to be called once, or misleading if done on purpose.

== Noncompliant Code Example

----
DECLARE @v1 INTEGER = 1
DECLARE @v2 INTEGER = - - -@v1 -- Noncompliant; -@v1 should be used instead
DECLARE @v3 INTEGER = ~~~@v1 -- Noncompliant; ~@v1 should be used instead
DECLARE @v4 INTEGER = ++@v1 -- Noncompliant; operators are useless here

IF NOT NOT @v1 <> @v2 -- Noncompliant
  BEGIN
    PRINT @msg
  END
----

== Compliant Solution

----
DECLARE @v1 INTEGER = 1
DECLARE @v2 INTEGER = -@v1
DECLARE @v3 INTEGER = ~@v1
DECLARE @v4 INTEGER = @v1

IF @v1 <> @v2
  BEGIN
    PRINT @msg
  END
----

ifdef::env-github,rspecator-view[]
'''
== Comments And Links
(visible only on this page)

include::../comments-and-links.adoc[]
endif::env-github,rspecator-view[]
