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How important is the order of columns in indexes?
...alues, while Column 1 above does negate 1/2 the possibilities, the index already knows which index page to go straight to for the Column2 value, it does not necessary need Column 1 to narrow down the set.
– CodeCowboyOrg
Mar 23 '15 at 17:57
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What is the usefulness of PUT and DELETE HTTP request methods?
I have read a lot stuff about this but not able to get the conclusion on this topic.
4 Answers
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Extract a part of the filepath (a directory) in Python
...tput:
C:\Program Files\Internet Explorer
Case you need all parts (already covered in other answers) use parts:
p = Path(r'C:\Program Files\Internet Explorer\iexplore.exe')
print(p.parts)
Then you will get a list:
('C:\\', 'Program Files', 'Internet Explorer', 'iexplore.exe')
Saves tone...
Implications of foldr vs. foldl (or foldl')
Firstly, Real World Haskell , which I am reading, says to never use foldl and instead use foldl' . So I trust it.
7 A...
How To Accept a File POST
...ew MultipartFormDataStreamProvider(root);
var task = request.Content.ReadAsMultipartAsync(provider).
ContinueWith<HttpResponseMessage>(o =>
{
string file1 = provider.BodyPartFileNames.First().Value;
// this is the file name on the server where the file ...
fastest (low latency) method for Inter Process Communication between Java and C/C++
...duling overhead (or core caches?) is also the culprit
At the same time Thread.sleep(0) (which as strace shows causes a single sched_yield() Linux kernel call to be executed) takes 0.3 microsecond - so named pipes scheduled to single core still have much overhead
Some shared memory measurement:
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angular.element vs document.getElementById or jQuery selector with spin (busy) control
...rences.
In case you do wonder why to use document.querySelector(), please read this answer.
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Proper way to return JSON using node or Express
...was using because he wanted to do a get and for some reason they could not read my object properly. Thanks for noting the nice version of stringify. :)
– MightyMouse
Oct 31 '13 at 0:36
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How to fix Hibernate LazyInitializationException: failed to lazily initialize a collection of roles,
In the custom AuthenticationProvider from my spring project, I am trying read the list of authorities of the logged user, but I am facing the following error:
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What's the purpose of using braces (i.e. {}) for a single-line if or loop?
I'm reading some lecture notes of my C++ lecturer and he wrote the following:
23 Answers
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