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For questions about the design or implementation of loops (e.g., for, while, do/while) in a programming language, including syntax and functionality.
3
votes
What would a for loop return in an expression oriented language?
One option is outputting the loop guard. This has the advantage of always having a value even if the loop is run 0 times, but somewhat restricts how the initialization of the loop could work.
For exam …
23
votes
Accepted
Why does Rust have an infinite loop construct?
Other languages don't have this because they have statements distinct from expressions, so loops don't return anything. … In rust all other loops return ()
This feature was actually added later, initially the loop{} construct existed as the only way to create a ! "never" type. …