rspec/rules/S3256/csharp/rule.adoc

== Why is this an issue?

Using ``++string.Equals++`` to determine if a string is empty is significantly slower than using ``++string.IsNullOrEmpty()++`` or checking for ``++string.Length == 0++``. ``++string.IsNullOrEmpty()++`` is both clear and concise, and therefore preferred to laborious, error-prone, manual null- and emptiness-checking.


=== Noncompliant code example

[source,csharp]
----
"".Equals(name); // Noncompliant
!name.Equals(""); // Noncompliant
name.Equals(string.Empty); // Noncompliant
----


=== Compliant solution

[source,csharp]
----
name != null && name.Length > 0 // Compliant but more error prone
!string.IsNullOrEmpty(name)
string.IsNullOrEmpty(name)
----


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== Implementation Specification
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== Comments And Links
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