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How expensive is RTTI?
... reasons. However, there are good reasons to use RTTI (mainly because of boost::any). That in mind, it's useful to know its actual resource usage in common implementations.
I recently did a bunch of research into RTTI in GCC.
tl;dr: RTTI in GCC uses negligible space and typeid(a) == typeid(b) is v...
Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
... resource is anything that needs cleanup after use. Studies of projects across many platforms show the majority of bugs are related to resource management - and it's particularly bad on Windows (due to the many types of objects and allocators).
In C++, resource management is particularly complicate...
Why do people say there is modulo bias when using a random number generator?
...asked a lot but never seen a true concrete answer to it. So I am going to post one here which will hopefully help people understand why exactly there is "modulo bias" when using a random number generator, like rand() in C++.
...
Is Haxe worth learning? [closed]
...e to switch constantly, often multiple times in the same business day.
Those switches can waste a lot of your time because you need to change your programming paradigm too many times and possibly because you will have a lot of overlaps in coding your libraries for specific targets. Haxe tries to e...
How to explain callbacks in plain english? How are they different from calling one function from ano
...
@JoSmo you are partly correct. Pass a variable + call-back-function as parameters taking the result created with the variable by the original function and pass it in the call-back-function for further processing. example: func1...
Why should we NOT use sys.setdefaultencoding(“utf-8”) in a py script?
...though there's a bit of death by too much information here. I learned the most just focusing on this article: blog.notdot.net/2010/07/Getting-unicode-right-in-Python
– mbb
Nov 20 '12 at 22:19
...
REST API Token-based Authentication
...to include a random component ("nonce") in the URL.
url = username:key@myhost.com/api/call/nonce
If that is not possible, and the transmitted information is not secret, I recommend securing the request with a hash, as you suggested in the token approach. Since the hash provides the security, you ...
A complete solution to LOCALLY validate an in-app receipts and bundle receipts on iOS 7
...eturn;
// Apple recommends to refresh the receipt if validation fails on iOS
[[RMStore defaultStore] refreshReceiptOnSuccess:^{
RMAppReceipt *receipt = [RMAppReceipt bundleReceipt];
[self verifyTransaction:transaction inReceipt:receipt success:successBlock failure:failureBlock];
} failure:^...
What does “dereferencing” a pointer mean?
...iable that is a pointer to a structure with data members, you can access those members using the -> dereferencing operator:
typedef struct X { int i_; double d_; } X;
X x;
X* p = &x;
p->d_ = 3.14159; // Dereference and access data member x.d_
(*p).d_ *= -1; // Another equivalent notat...
How do I uniquely identify computers visiting my web site?
...on that they will transmit to websites upon request. We
implemented one possible fingerprinting algorithm, and collected these
fingerprints from a large sample of browsers that visited our test side,
panopticlick.eff.org. We observe that the distribution of our finger-
print contains at l...