Time: 0:00
Test a custom input to verify an edge case (e.g. empty lists, negative numbers, duplicates).
This bug belongs to the null and undefined errors pattern
Cannot read properties of undefined, NoneType has no attribute, NaN appearing from nowhere.
What went wrong: The code attempts to call Optional.get() without checking if the Optional contains a value using isPresent(), leading to a NoSuchElementException when the Optional is empty.
The fix: Use Optional.orElse() to provide a default value when the Optional is empty, preventing the exception.
Remember: Always handle the absence of a value in an Optional to avoid runtime exceptions.
The pattern behind it: null and undefined errors.
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