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by brundolf
1609 days ago
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1. You’re correct, there’s no way to do that. Fortunately in this case, you’d want to use the native sort function anyway because it’ll be much faster than one written in JS/Bagel, and that is accessible in a pure context (as a pure function of an array or iterator; not in-place). There will be some barriers to certain optimizations in Bagel, but that’s done knowingly. Bagel is intended as an application-level language, so certain choices are made that prioritize maintainability over performance. With that said, performance is still a priority, and certain things like the focus on iterators over array-cloning are there to tackle common JS performance problems. 2. I’m planning to make an exception here for debugging purposes; I’m thinking a function or operator that logs a value and then evaluates to it. Not strictly pure, but close enough from a maintainability standpoint. 3. Yes, any type can be labeled “const”, which is recursive. If a proc has a const argument, an otherwise-mutable object can be passed to it and it will just be treated as const within that proc. However, a const object cannot be passed to a non-const parameter (or variable, etc), otherwise some other code could then mutate it. Assignable (output) parameters will not be supported, but contents of parameters can be mutated by procs. I specifically wanted to discourage people from using procs to generate values; they should only say what to do with the values. 4. I may not have been fully versed on the terminology :) |
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