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Code Smell 12 - Null is Schizophrenic and Does Not Exist in The Real-world - Stanley - Jan 6, 2026 Code Smell 12 - Null is Schizophrenic and Does Not Exist in The Real-world Programmers use Null as different flags. It can hint at an absence, an undefined value, en error etc. Multiple semantics lead to coupling and defects. https://hackernoon.com/code-smell-12-null-is-schizophrenic-and-does-not-exist-in-the-real-world?source=rss