1. Vulnerability Description

• When you check if the data structure is empty, the size and length methods may require O(n) time complexity, and performance may be reduced.

2. Vulnerability Countermeasure

• Use the isEmpty or nonEmpty methods.

3. Sample Code

• Vulnerable Code

class Test {
   seq.length > 0
   seq.length != 0
   seq.length == 0
}

• Safe Code

class Test {
   seq.nonEmpty
   seq.nonEmpty
   seq.isEmpty
}