46 lines
1.5 KiB
Plaintext
46 lines
1.5 KiB
Plaintext
Passing a collection as an argument to the collection's own method is either an error - some other argument was intended - or simply nonsensical code.
|
|
|
|
|
|
Further, because some methods require that the argument remain unmodified during the execution, passing a collection to itself can result in an unexpected behavior.
|
|
|
|
== Noncompliant Code Example
|
|
|
|
----
|
|
var list = new List<int>();
|
|
|
|
list.AddRange(list); // Noncompliant
|
|
list.Concat(list); // Noncompliant
|
|
|
|
list.Union(list); // Noncompliant; always returns list
|
|
list.Except(list); // Noncompliant; always empty
|
|
list.Intersect(list); // Noncompliant; always list
|
|
list.SequenceEqual(list); // Noncompliant; always true
|
|
|
|
var set = new HashSet<int>();
|
|
set.UnionWith(set); // Noncompliant; no changes
|
|
set.ExceptWith(set); // Noncompliant; always empty
|
|
set.IntersectWith(set); // Noncompliant; no changes
|
|
set.IsProperSubsetOf(set); // Noncompliant; always false
|
|
set.IsProperSupersetOf(set); // Noncompliant; always false
|
|
set.IsSubsetOf(set); // Noncompliant; always true
|
|
set.IsSupersetOf(set); // Noncompliant; always true
|
|
set.Overlaps(set); // Noncompliant; always true
|
|
set.SetEquals(set); // Noncompliant; always true
|
|
set.SymmetricExceptWith(set); // Noncompliant; always empty
|
|
----
|
|
|
|
ifdef::env-github,rspecator-view[]
|
|
|
|
'''
|
|
== Implementation Specification
|
|
(visible only on this page)
|
|
|
|
include::message.adoc[]
|
|
|
|
'''
|
|
== Comments And Links
|
|
(visible only on this page)
|
|
|
|
include::../comments-and-links.adoc[]
|
|
endif::env-github,rspecator-view[]
|