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| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #278072 |
Post edited: |
— | over 3 years ago |
| Edit | Post #278072 | Initial revision | — | over 3 years ago |
| Answer | — |
A: How can I define a method on [&mut T] where T: MyTrait? This error doesn't do a good job at all of highlighting the important thing! You can't define an inherent `impl` on a type parameter. You have to make it the `impl` of some trait. Here's an example: Try it online! ```rust trait A: Sized { type B; fn f(m: &mut [Self], b: Self::B); } ... (more) |
— | over 3 years ago |
| Edit | Post #278071 |
Post edited: |
— | over 3 years ago |
| Edit | Post #278071 | Initial revision | — | over 3 years ago |
| Answer | — |
A: Is concatenation a logical AND? tl;dr: No. From an engineering perspective, you might be asking if a concatenation operator can be used in place of a logical ‘and’ operator. This is obviously specific to a particular language, but I'm not aware of any language in which this is the case, and I've seen a few languages. For most la... (more) |
— | over 3 years ago |
| Edit | Post #278070 | Initial revision | — | over 3 years ago |
| Answer | — |
A: Can regex be used to check if input conforms to a very strict subset of HTML? Okay, I'll be the contrarian. For this case, yes, I think a regex-based approach can be used to validate these properties. This approach will not guarantee that the provided input is valid HTML; in particular, it won't ensure that elements are nested correctly. For this reason, I would go with the... (more) |
— | over 3 years ago |
| Edit | Post #278069 | Initial revision | — | over 3 years ago |
| Answer | — |
A: How long in days is a MONTH in MySQL? There is no fixed number of days in a `MONTH` interval. `DATESUB` is mostly just decrementing the number in the months position of the date provided. So `DATESUB('2020-09-14', INTERVAL 3 MONTH)` is `'2020-06-14'` and `DATESUB('2020-03-14', INTERVAL 3 MONTH)` is `'2019-12-14'`. The documentation descr... (more) |
— | over 3 years ago |
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