rspec/rules/S1155/swift/rule.adoc

Using `+[Int]().count+` to test for emptiness works, but using `+[Int]().isEmpty+` makes the code more readable and can be more performant. The time complexity of any `+isEmpty+` implementation should be `+O(1)+` whereas some implementations of `+count()+` can be `+O(n)+`.

== Noncompliant Code Example

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if (arr.count == 0) {  // Noncompliant
  /* ... */
}
----

== Compliant Solution

----
if (arr.isEmpty) {
  /* ... */
}
----