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I would like to see improvements in the speed of feedback - particularly from language servers - but the value of those 'basic' guarantees is more than worth the current cost. Unexpected side effects are responsible for almost every trip I've taken with a debugger in any large Java or C++ project I've ever worked on.

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I can remember about 20 years ago a colleague getting quite frustrated that a bug he had been looking at for quite a long time came down to someone doing something bizarre in an overloaded assignment operator in C++.

I've seen methods with names like "get_value()" have extensive side effects.

No type system can fix bad programming.

Of course I think we have all seen horrors like that - what I remember was his completely exasperated response not the technical details of the bug.

Complexity is mostly exponentiellt worse in the unknowns and you can not graph what you already know.

The point in the article is that when we read code we need another visualization to change or mental model. I can scan code and find most bugs fast, but when you are stuck a complexity by row/column sure would be handy to find overloaded assignments.

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