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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 …
mousetail 'he-him''s user avatar
23 votes
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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. …
mousetail 'he-him''s user avatar