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Compare object instances for equality by their attributes
...e that in Python 2.5 and onwards, the class must define __eq__(), but only one of __lt__(), __le__(), __gt__(), or __ge__() is needed in addition to that. From that, Python can infer the other methods. See functools for more information.
– kba
Nov 19 '13 at 1:4...
Why is auto_ptr being deprecated?
...
The direct replacement for auto_ptr (or the closest thing to one anyway) is unique_ptr. As far as the "problem" goes, it's pretty simple: auto_ptr transfers ownership when it's assigned. unique_ptr also transfers ownership, but thanks to codification of move semantics and the magic of ...
Differences and relationship between glActiveTexture and glBindTexture
...state of an OpenGL object, you must first bind it to the context. This is done with some from of glBind* call.
The C/C++ equivalent to this is as follows:
Object *g_objs[MAX_LOCATIONS] = {NULL};
void BindObject(int loc, Object *obj)
{
g_objs[loc] = obj;
}
Textures are interesting; they rep...
NuGet auto package restore does not work with MSBuild
...folder.
If you have Nuget 2.7+ installed; it's important to pick one method for > managing Automatic Package Restore in Visual Studio.
Two methods are available:
(Nuget 2.7+): Visual Studio -> Tools -> Package Manager -> Package
Manager Settings -> Enable Auto...
Android Fragment lifecycle over orientation changes
...
You're layering your Fragments one on top of the other.
When a config change occurs the old Fragment adds itself to the new Activity when it's recreated. This is a massive pain in the rear most of the time.
You can stop errors occurring by using the same...
Android: Go back to previous activity
...tp://developer.android.com/reference/android/content/Intent.html
As mentioned in the comments, if the activity is opened with startActivity() then one can close it with finish().
If you wish to use the Up button you can catch that in onOptionsSelected(MenuItem item) method with checking the item I...
Dump a mysql database to a plaintext (CSV) backup from the command line
...form that is only convenient for mysql to read. CSV seems more universal (one file per table is fine). But if there are advantages to mysqldump, I'm all ears. Also, I'd like something I can run from the command line (linux). If that's a mysql script, pointers to how to make such a thing would be...
ConcurrentHashMap vs Synchronized HashMap
...re a lock.
Locking the entire collection is a performance overhead. While one thread holds on to the lock, no other thread can use the collection.
ConcurrentHashMap was introduced in JDK 5.
There is no locking at the object level,The locking is at a much finer granularity. For a ConcurrentHashMa...
insert multiple rows via a php array into mysql
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Assembling one INSERT statement with multiple rows is much faster in MySQL than one INSERT statement per row.
That said, it sounds like you might be running into string-handling problems in PHP, which is really an algorithm problem, no...
How to detect the current OS from Gradle
... that it's still incubating though.
Mid 2018 Update: just like it was mentioned in comments, now this class moved to a different package, so one should use org.gradle.nativeplatform.platform.OperatingSystem.current()
As of mid 2015, Peter Kahn's answer is still valid. Environment-based profile acti...