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Is there a performance difference between i++ and ++i in C++?
..., if i is an instance of a C++ class, then i++ and ++i are making calls to one of the operator++ functions. Here's a standard pair of these functions:
Foo& Foo::operator++() // called for ++i
{
this->data += 1;
return *this;
}
Foo Foo::operator++(int ignored_dummy_value) // call...
Is asynchronous jdbc call possible?
...p JDBC calls in Actors, executors or anything else can help here - can someone clarify.
Surely the basic problem is that the JDBC operations block on socket IO. When it does this it blocks the Thread its running on - end of story. Whatever wrapping framework you choose to use its going to end up wi...
What is a C++ delegate?
... an incredible number of choices to achieve delegates in C++. Here are the ones that came to my mind.
Option 1 : functors:
A function object may be created by implementing operator()
struct Functor
{
// Normal class/struct members
int operator()(double d) // Arbitrary return types an...
recursion versus iteration
... and scopes in a stack. But changing your recursive algorithm to a looping one might need a lot of work and make your code less maintainable : as for every optimization, it should only be attempted when some profiling or evidence showed it to be necessary.
...
Installing Java on OS X 10.9 (Mavericks)
...va package for OS X, which is in Java for OS X 2013-005.
Update: As mentioned in the comments below, there is a newer version of this same package:
Java for OS X 2014-001
Java for OS X 2014-001 (Correcting dead line above)
Java for OS X 2014-001 includes installation improvements, and supers...
How to resolve git stash conflict without commit?
...l changes are just debug: true in some settings file. Now you pull and someone has introduced a new setting there, creating a conflict.
git status says:
# On branch master
# Unmerged paths:
# (use "git reset HEAD <file>..." to unstage)
# (use "git add/rm <file>..." as appropriate t...
Do I need to disable NSLog before release Application?
When releasing an app for iPhone, if I disable NSLog(); will it perform better?
12 Answers
...
Fixed size queue which automatically dequeues old values upon new enques
...
Don't define your own queue, just use the inherited one. If you do as you do, you can actually do nothing else with the queue values, all other functions but your new Enqueue will still call the original queue. In other words, although this answer is marked as accepted, it's c...
Get element inside element by class and ID - JavaScript
...yId("foo").getElementsByClassName("bar")[0];
getElementById only returns one node, but getElementsByClassName returns a node list. Since there is only one element with that class name (as far as I can tell), you can just get the first one (that's what the [0] is for—it's just like an array).
T...
Markdown and including multiple files
...o your question, there's no markdown command to include a single link from one file to another in any version of markdown (so far as I know).
The closest you could come to this functionality is Pandoc. Pandoc allows you to merge files as a part of the transformation, which allows you to easily r...