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Any reason why scala does not explicitly support dependent types?
...s and implicits directly. You can find numerous examples of how this plays out in shapeless: sized types, extensible records, comprehensive HLists, scrap your boilerplate, generic Zippers etc. etc.
The only remaining objection I can see is that in the above encoding of Pi types we require the singl...
How do we control web page caching, across all browsers?
...Expires, so it's after all for HTTP 1.0 proxies only.
If you don't care about IE6 and its broken caching when serving pages over HTTPS with only no-store, then you could omit Cache-Control: no-cache.
Cache-Control: no-store, must-revalidate
Pragma: no-cache
Expires: 0
If you don't care about IE6...
Verifying signed git commits?
...essage.
If you want to automate the check, git 2.6+ (Q3 2015) adds another output.
See commit e18443e, commit aeff29d, commit ca194d5, commit 434060e, commit 8e98e5f, commit a4cc18f, commit d66aeff (21 Jun 2015) by brian m. carlson (bk2204).
(Merged by Junio C Hamano -- gitster -- in commit ba12cb2...
Append an object to a list in R in amortized constant time, O(1)?
...525 206.4490 208.279580 215.841129 5
>
First of all, a word about the min/lq/mean/median/uq/max values: Since we are performing the exact same task for each of 5 runs, in an ideal world, we could expect that it would take exactly the same amount of time for each run. But the first run i...
What's the difference between eval, exec, and compile?
...print("Hello")', '<string>', 'exec'))
Hello
>>>
works without problems, even though the compiled code contains statements. It still returns None, because that is the return value of the code object returned from compile.
In the 'eval' mode (and thus with the eval function if a stri...
Further understanding setRetainInstance(true)
..., but sadly none of it is linked from setRetainInstance(). From the page about fragments
Note: Each fragment requires a unique identifier that the system can
use to restore the fragment if the activity is restarted (and which
you can use to capture the fragment to perform transactions, such ...
How does PHP 'foreach' actually work?
...ostly-kinda-sort of works, but there's a lot of weird behavior you can get out of it, some of which I'll demonstrate below.
Array duplication
The IAP is a visible feature of an array (exposed through the current family of functions), as such changes to the IAP count as modifications under copy-on-...
AI2 Keep Awake
...e latest versions of the extensions are used in all examples. When trying out the examples, you should therefore download the latest version if necessary. Test results The test program was tested on several devices: Device Result Smartphone Samsung A02s, Android 12 Works as intended ...
What is a correct mime type for docx, pptx etc?
...nabled.12
.mdb application/vnd.ms-access
For further details check out this TechNet article and this blog post.
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What is the best regular expression to check if a string is a valid URL?
...ring)
{
Uri uri;
return Uri.TryCreate(urlString, UriKind.Absolute, out uri)
&& (uri.Scheme == Uri.UriSchemeHttp
|| uri.Scheme == Uri.UriSchemeHttps
|| uri.Scheme == Uri.UriSchemeFtp
|| uri.Scheme == Uri.UriSchemeMailto
/*...*/);
}
// In...