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Activity for Derek Elkins
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #282688 | Initial revision | — | almost 3 years ago |
| Answer | — |
A: updating a function within a struct You are correct in your analysis (though I would not call `newb` a "parameter" but a captured variable). What you want is for the closure (anonymous function) to take responsibility for `newb` and not just borrow it temporarily. In other words, you want move semantics and not a borrow. As menti... (more) |
— | almost 3 years ago |
| Comment | Post #281192 |
The issues that might prompt rollback aren't just "the migration failed to complete successfully". Commonly, after deploying (especially database migrations), it's common to do at least some kind of smoke testing to make sure the production environment is behaving as expected. If these tests fail, ro... (more) |
— | about 3 years ago |
| Edit | Post #280700 | Initial revision | — | about 3 years ago |
| Answer | — |
A: Is it wrong to demand features in open-source projects? As you have worded it, for most open source project, particularly small ones, I would say "yes", it is "wrong" to demand features. Or rather, it's extremely rude. Most of the time open source software is free (as in beer) and, again particularly for smaller projects, done entirely in the developer... (more) |
— | about 3 years ago |
| Comment | Post #279716 |
@ArtOfCode Typically, in a scenario like this, you'd want to fallback to a local copy of the JavaScript library (potentially trying some other CDNs beforehand). Also, while we're talking about it, I'd recommend using [Subresource Integrity attributes](https://www.srihash.org/). (more) |
— | over 3 years ago |
| Edit | Post #280105 |
Post edited: The second scenario I described in the original version shouldn't be able to happen. |
— | over 3 years ago |
| Edit | Post #280105 | Initial revision | — | over 3 years ago |
| Answer | — |
A: Is it necessary for a build server to remove node_modules before an AOT build? I can't really think of a compelling reason to remove `nodemodules` as a matter of course. The most compelling one, is what you alluded to. If `nodemodules` is "corrupted" in some manner, removing and refetching it will resolve that "corruption" without needing any manual intervention. Short of a ... (more) |
— | over 3 years ago |
| Edit | Post #280060 | Initial revision | — | over 3 years ago |
| Answer | — |
A: When should I use wait() instead of get() when using C++ threads tl;dr If you don't have a reason otherwise, you should use `get`. More precisely, if you will be done with the future, you should use `get`. You should use `wait` only if there is some separation between when you want to ensure the visible side-effects of the future have completed and when you will b... (more) |
— | over 3 years ago |
| Comment | Post #278563 |
The linked page provides several implementations of `pmat`. (more) |
— | over 3 years ago |
| Edit | Post #278563 | Initial revision | — | over 3 years ago |
| Answer | — |
A: Permutations of an array - APL I assume the built-in definition you're referring to is pmat. That illustrates how to solve your problem near the bottom. The idea is simply if σ is a permutation of length N and A is an array of length N, then A[σ] is A permuted by σ. This leads to a definition like: ```apl permute←{⍵[pmat⊃⍴⍵]} ... (more) |
— | over 3 years ago |
| Edit | Post #278363 | Initial revision | — | over 3 years ago |
| Answer | — |
A: What do the number entries mean in the sympy poly.diff(...) tuple syntax? Based on the source code which delegates to this implementation among others, `base.diff((x, n))` means to compute the `n`-th derivative of `base` with respect to `x`. Any arguments to `diff` which aren't tuples get tupled with 1, e.g. `base.diff(x)` is more or less equivalent to `base.diff((x, 1))`.... (more) |
— | over 3 years ago |
| Edit | Post #278362 | Initial revision | — | over 3 years ago |
| Answer | — |
A: Are generic enums completely abstract? Your question is a bit ambiguous. Usually when one talks about something being "completely abstract", one means the details of the representation are opaque. This is the sense of "abstract" in "abstract data type". To this end, Rust enums are not "completely abstract" as various details of their repr... (more) |
— | over 3 years ago |
| Comment | Post #277488 |
The K Framework project, a system for specifying operational semantics for programming languages, made a semantics for C that would get stuck when undefined behavior was encountered. The implementation is here: https://github.com/kframework/c-semantics and it's described in the paper [Defining the Un... (more) |
— | over 3 years ago |
| Comment | Post #278173 |
What evidence do you have to support that the reason for this (lack of) specification is "to allow compilers to keep their expression parsing algorithm a trade secret"? There's no reason how you parse expressions would affect execution time of the ultimate program, and I doubt how parsing is implemen... (more) |
— | over 3 years ago |
| Comment | Post #278049 |
@ShowMeBillyJo In the scenario I believe the OP is in and the scenarios I've described, you are not starting with HTML but rather generating it client-side, e.g. from Markdown. In this case, no one needs to parse HTML. To me, it's better to offload user-specific non-security-sensitive work to the cli... (more) |
— | over 3 years ago |
| Comment | Post #278032 |
You should clarify that *for programming languages that will treat strings as boolean values and which interpret the empty string as false and **all** non-empty strings as true*, then it will be the case that the boolean value associated to the concatenation will be the disjunction of the boolean val... (more) |
— | over 3 years ago |
| Comment | Post #278044 |
It's probably worth noting that these don't provide equivalent interfaces. In particular, the CancellationToken approach does not provide you with a way of telling when the cancellation is "complete". The second interface would be closer to the former if `StopAsync` returned `void` (at which point `S... (more) |
— | over 3 years ago |
| Comment | Post #278044 |
"Best" in what way? (more) |
— | over 3 years ago |
| Edit | Post #278049 | Initial revision | — | over 3 years ago |
| Answer | — |
A: Can regex be used to check if input conforms to a very strict subset of HTML? I mostly agree with the upshot of hkotsubo's answer, but I want to both tailor the answer more specifically to your question and give some more general advice. First, the restricted subset you describe is still not a regular language. As a rule of thumb, if you have constructs, e.g. ``, which can ... (more) |
— | over 3 years ago |
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