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How exactly does __attribute__((constructor)) work?
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It runs when a shared library is loaded, typically during program startup.
That's how all GCC attributes are; presumably to distinguish them from function calls.
GCC-specific syntax.
Yes, this works in C and C++.
No, the function does not need to be static.
The destructo...
What is Cache-Control: private?
...getting the cached version for 15 seconds. If it's a corporate proxy, then all 67198 users hitting the same page in the same 15-second window will all get the same contents - all served from close cache. Performance win for everyone.
The virtue of adding Cache-Control: max-age is that the browser d...
Is “double hashing” a password less secure than just hashing it once?
...o compute a hash for each password and see if it matches the stored hash.
All passwords are not equally likely. Attackers might exhaustively search all short passwords, but they know that their chances for brute-force success drop sharply with each additional character. Instead, they use an ordered...
Download attachments using Java Mail
Now that I`ve downloaded all the messages, and store them to
4 Answers
4
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How do I put two increment statements in a C++ 'for' loop?
...us:
for(int i = 0; i != 5; ++i,++j)
do_something(i,j);
But is it really a comma operator?
Now having wrote that, a commenter suggested it was actually some special syntactic sugar in the for statement, and not a comma operator at all. I checked that in GCC as follows:
int i=0;
int a=5;
int...
Explicitly set Id with Doctrine when using “AUTO” strategy
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New solution works fine only when ALL entities have id before insert. When one entity has ID and another one does not - new solution is failing.
I use this function for import all my data:
function createEntity(\Doctrine\ORM\EntityManager $em, $entity, $id ...
“Could not find any information for class named ViewController”
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What solved this issue for me was actually deleting the class from the project.
Steps:
In the project file explorer (left panel) find the class and right click -> Delete
Remove reference (do not move to trash as you will lose the class for good)
Right click...
Android: How to bind spinner to custom object list?
...ass)
label.setText(values[position].getName());
// And finally return your dynamic (or custom) view for each spinner item
return label;
}
// And here is when the "chooser" is popped up
// Normally is the same view, but you can customize it if you want
@Overr...
Dynamic variable names in Bash
...Fgilrtux] [-p] [name[=value] ...]. You might double-check that you are actually running 4.x and not 3.2.
– chepner
Dec 2 '13 at 16:08
5
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Should you declare methods using overloads or optional parameters in C# 4.0?
...hat is going to be the recommended way to declare methods that do not need all parameters specified?
13 Answers
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