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RAII and smart pointers in C++
...ance (and stealing an example from another answer):
void foo() {
std::string str;
// Do cool things to or using str
}
This works fine - but what if we want to return str? We could write this:
std::string foo() {
std::string str;
// Do cool things to or using str
return str;
}...
Are PDO prepared statements sufficient to prevent SQL injection?
...xbf27. In gbk, that's an invalid multibyte character; in latin1, it's the string ¿'. Note that in latin1 and gbk, 0x27 on its own is a literal ' character.
We have chosen this payload because, if we called addslashes() on it, we'd insert an ASCII \ i.e. 0x5c, before the ' character. So we'd win...
getSupportActionBar from inside of Fragment ActionBarCompat
...).
((AppCompatActivity)getActivity()).getSupportActionBar().setSubtitle(R.string.subtitle);
You do need the cast. It's not poor design, it's backwards compatibility.
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How to convert TimeStamp to Date in Java?
...s").parse("01/01/1970 01:00:00").getTime() / 1000;
Or the opposite:
String date = new java.text.SimpleDateFormat("MM/dd/yyyy HH:mm:ss").format(new java.util.Date (epoch*1000));
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How does MySQL process ORDER BY and LIMIT in a query?
...t used it in a production environment, but now when I bench marked it, the extra sorting does not impact the performance.
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Angular IE Caching issue for $http
...
You can either append a unique querystring (I believe this is what jQuery does with the cache: false option) to the request.
$http({
url: '...',
params: { 'foobar': new Date().getTime() }
})
A perhaps better solution is if you have access to the serv...
How do I call ::std::make_shared on a class with only protected or private constructors?
...and doesn't require a derived class:
#include <memory>
#include <string>
class A {
protected:
struct this_is_private;
public:
explicit A(const this_is_private &) {}
A(const this_is_private &, ::std::string, int) {}
template <typename... T>
static ::std:...
Selectors in Objective-C?
...l about the method names. In this case, the method name is just "lowercaseString", not "lowercaseString:" (note the absence of the colon). That's why you're getting NO returned, because NSString objects respond to the lowercaseString message but not the lowercaseString: message.
How do you know wh...
How does libuv compare to Boost/ASIO?
...a thread abstraction, as Boost.Thread already provides one.
On the other hand, libuv is a C library designed to be the platform layer for Node.js. It provides an abstraction for IOCP on Windows, kqueue on macOS, and epoll on Linux. Additionally, it looks as though its scope has increased slightly...
What is the difference between Directory.EnumerateFiles vs Directory.GetFiles?
...merable which can be lazily evaluated somewhat, whereas GetFiles returns a string[] which has to be fully populated before it can return.
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