Rust bandwagon

Rust bandwagon

Posted Jan 10, 2023 17:08 UTC (Tue) by farnz (subscriber, #17727)
In reply to: Rust bandwagon by kleptog
Parent article: Welcome to 2023

One thing I've seen time and time again with junior developers is that they've not yet internalised the rules of programming (in any language, not even the one they're working in), and are reliant on the computer telling them that they've made a mistake. Having this happen at compile time is better, but even a runtime exception (like in Java or C#) is an enormous help, since it means you get feedback that you've written something illegal.

In this context, C's thing of "if it's UB, the computer can silently do the wrong thing" is really bad for a developer's education, since the computer will often appear to work even though the developer has done the wrong thing (buffer overflow, use-after-free). Rust's move to "in order to even have UB, you need the unsafe keyword" means that junior developers know to stay away from potential UB, and thus avoid the C problem, since it's obvious to them that they're potentially making a mistake.

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