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Why does scanf() need “%lf” for doubles, when printf() is okay with just “%f”?
Why is it that scanf() needs the l in " %lf " when reading a double , when printf() can use " %f " regardless of whether its argument is a double or a float ?
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Moving from CVS to Git: $Id$ equivalent?
I read through a bunch of questions asking about simple source code control tools and Git seemed like a reasonable choice. I have it up and running, and it works well so far. One aspect that I like about CVS is the automatic incrementation of a version number.
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Where's my JSON data in my incoming Django request?
...e same problem. I had been posting a complex JSON response, and I couldn't read my data using the request.POST dictionary.
My JSON POST data was:
//JavaScript code:
//Requires json2.js and jQuery.
var response = {data:[{"a":1, "b":2},{"a":2, "b":2}]}
json_response = JSON.stringify(response); // pr...
How can I parse a JSON file with PHP? [duplicate]
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I can't believe so many people are posting answers without reading the JSON properly.
If you foreach iterate $json_a alone, you have an object of objects. Even if you pass in true as the second parameter, you have a two-dimensional array. If you're looping through the first dimensio...
proper hibernate annotation for byte[]
...k - 200k in size). It uses the JPA @Lob annotation, and hibernate 3.1 can read these just fine on all major databases -- it seems to hide the JDBC Blob vendor peculiarities (as it should do).
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Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
POSIX allows mutexes to be recursive. That means the same thread can lock the same mutex twice and won't deadlock. Of course it also needs to unlock it twice, otherwise no other thread can obtain the mutex. Not all systems supporting pthreads also support recursive mutexes, but if they want to be P...
Set cURL to use local virtual hosts
... time the question and answer was produced. SO users you can't be bothered reading past the first answer and also evaluate answers based on their timestamps will never get the best help...
– Bruno
Oct 26 '14 at 14:36
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What is the difference between an abstract function and a virtual function?
...anything in the MSDN documentation.(I had a headache after five minutes of reading this: msdn.microsoft.com/en-us/library/aa645767(v=vs.71).aspx)
– Jake
Nov 1 '11 at 15:49
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Parsing a comma-delimited std::string [duplicate]
...if you are to get the values to an array? (If the number of elements are already known)
– S.Dan
Nov 10 '14 at 12:22
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Does opacity:0 have exactly the same effect as visibility:hidden
...lement.)
According to philnash's answer, elements with opacity:0 are still read by screen readers, while visible:hidden elements are not.
According to Chris Noe's answer, visibility has more options (such as collapse) and elements that are not visible no longer respond to clicks and cannot be tabbed...