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Should I implement __ne__ in terms of __eq__ in Python?
...e __ne__ method follows automatically from __eq__ only if
__ne__ isn't already defined in a superclass. So, if you're
inheriting from a builtin, it's best to override both.
If you need your code to work in Python 2, follow the recommendation for Python 2 and it will work in Python 3 just fine...
What are the underlying data structures used for Redis?
...t to store an HTML page, but also when you want to avoid converting your already encoded data. So for instance, if you have JSON or MessagePack you may just store objects as strings. In Redis 2.6 you can even manipulate this kind of object server side using Lua scripts.
Another interesting usage of...
Call a Server-side Method on a Resource in a RESTful Way
...the message's processing.
I don't know much about your system, but I'd already bet both aren't true:
{"action":"bark"} is not a document, it actually is the method you are trying to ninja-sneak into the service; and
the /v1/dogs/1/ URI represents a "dog" resource (probably the dog with id==1) an...
How to implement classic sorting algorithms in modern C++?
...attern in some places, in order to allow for loop invariant checking for already sorted sub-ranges. In production code, the use of while (first != last) and a ++first somewhere inside the loop might be slightly better.
Selection sort
Selection sort does not adapt to the data in any way, so its ru...
地图组件（高德地图） · App Inventor 2 中文网
...he GotFeatures event is run when when a feature collection is successfully read from the
given url. The features parameter will be a list of
feature descriptions that can be converted into components using the
根据描述生成特征 method.
LoadError(url,responseCode,errorMessage)
The LoadE...
How do SO_REUSEADDR and SO_REUSEPORT differ?
...s the key to understanding all other socket implementations, so you should read about it even if you don't care to ever write code for a BSD system.
There are a couple of basics you should know before we look at these two options. A TCP/UDP connection is identified by a tuple of five values:
{<...
How do I pass a unique_ptr argument to a constructor or a function?
...ident just from the function signature what's going to happen; you have to read the implementation (or associated documentation).
Because of that, I wouldn't suggest this as an interface.
(C) By const l-value reference
Base(std::unique_ptr<Base> const &n);
I don't show an implementati...
Is “double hashing” a password less secure than just hashing it once?
...,000 iterations, or bcrypt with cost factor of 12 or 13.
More background
Read PKCS #5 for authoritative information on the role of salt and iterations in hashing. Even though PBKDF2 was meant for generating encryption keys from passwords, it works well as a one-way-hash for password authentication...
How do you add an in-app purchase to an iOS application?
...et into the actual coding. Add the following code into your .h file:
BOOL areAdsRemoved;
- (IBAction)restore;
- (IBAction)tapsRemoveAds;
Next, you need to import the StoreKit framework into your .m file, as well as add SKProductsRequestDelegate and SKPaymentTransactionObserver after your @interfac...
TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
... *size = ROUNDUP(*size, PAGE_SIZE);
if ((area = mmap(0, *size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)) != MAP_FAILED)
return area;
#endif
return ((void *) ~0);
}
#endif
static __inline__ bhdr_t *process_area(void *area, size_t size)
{
bhdr_t *b, ...