Is It Wrong to Write Code in Hogwarts?

Zhang Weike, a former programmer, unexpectedly transmigrates into the wizarding world of Harry Potter—only to discover that magic is nothing more than lines of code written in Ancient Runes. Damn it! Even after crossing dimensions, code still haunts him. His hairline is in danger again. Realizing this, he looks at the witches and wizards who cast spells by feeling and emotion, leaving their "code" riddled with bugs. His professional instincts kick in hard. "You call that a Shield Charm? That defense logic is weaker than my grandmother's firewall!" "A Disarming Charm? The logic is way too vague—can't an enemy's head count as a weapon?" "Avada Kedavra? No branching, no auto-tracking—who taught you to write malware like that?" Zhang Weike can't help himself: magic is not supposed to work this way. Watch closely! Dumbledore is impressed: "Brilliant casting technique! You're hired as this year's Defense Against the Dark Arts professor." Then—"Firewall alert! Detected unregistered malicious program intrusion!" Zhang Weike: … However, he soon notices this world is a bit off. Why is there a curly-haired detective on Baker Street? Why does a bookstore in London really have an angel? Why does a warrior college girl randomly spawn at every ruin? Years later… Zhang Weike: "Tom, do you believe in love?" Voldemort: "Of course! I absolutely believe it! Now… could you please move your Avada Kedavra Gatling gun away a little?"