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'printf' vs. 'cout' in C++
...here; both printf and std::cout have their advantages.
Real differences
Extensibility
std::cout is extensible. I know that people will say that printf is extensible too, but such extension is not mentioned in the C standard (so you would have to use non-standard features - but not even common non...
How to convert a number to string and vice versa in C++
...tring to numeric
float stof(const string& str, size_t *idx = 0);
double stod(const string& str, size_t *idx = 0);
long double stold(const string& str, size_t *idx = 0);
int stoi(const string& str, size_t *idx = 0, int base = 10);
long ...
When to use Storyboard and when to use XIBs
...ny guidelines on when to use storyboards in an iOS project and when to use XIBs? what are the pros and cons of each and what situations do they each suit?
...
Creating an API for mobile applications - Authentication and Authorization
...ss quite a few people didn't manage to read all the way to the end :)
My experience of web service authentication is that people usually overengineer it, and the problems are only the same as you would encounter on a web page. Possible very simple options would include https for the login step, re...
Java 8 Iterable.forEach() vs foreach loop
...ull )
foo(prev, curr);
prev = curr;
}
Can't handle checked exceptions. Lambdas aren't actually forbidden from throwing checked exceptions, but common functional interfaces like Consumer don't declare any. Therefore, any code that throws checked exceptions must wrap them in try-catch o...
PHP global in functions
...tion is in before you can reliably call any of these. The function cannot exist without that environment.
Using the superglobals might not be an obvious flaw, but if you call your code from a Command Line, you don't have $_GET or $_POST. If your code relies on input from these, you are limiting yo...
Using a piano keyboard as a computer keyboard [closed]
...rt, translating keyboard midi notes to keys and more, I would go for AutoItX, the ActiveX/COM and DLL interface to autoIt. Info and download, go to http://www.autoitscript.com/site/autoit/
No need to write keyboard driver.
...
Relative imports in Python 2.7
...
Script vs. Module
Here's an explanation. The short version is that there is a big difference between directly running a Python file, and importing that file from somewhere else. Just knowing what directory a file is in does not determine what package P...
Why does C++ not have reflection?
... top priority at the moment, and has been pushed back until well after C++0x. The motivation for this feature is to get rid of the #include system, but it would also enable at least some metadata).
You don't pay for what you don't
use. That's one of the must basic
design philosophies underlying C++....
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
...n only writes to it, the instruction will wait until dest is ready before executing. This false dependency is (now) documented by Intel as erratum HSD146 (Haswell) and SKL029 (Skylake)
Skylake fixed this for lzcnt and tzcnt.
Cannon Lake (and Ice Lake) fixed this for popcnt.
bsf/bsr have a true out...