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Does a const reference class member prolong the life of a temporary?
...x(temp);
cout << sandbox.member << endl;
return 0;
}
Now temp will pass out of scope at the end of main() instead of at the end of the constructor. However, this is bad practice. Your member variable should never be a reference to a variable that exists outside of the instance....
What does yield mean in PHP?
...question's example that's $i.
What's the difference to normal functions?
Now you might wonder why we are not simply using PHP's native range function to achieve that output. And right you are. The output would be the same. The difference is how we got there.
When we use range PHP, will execute i...
Understanding Fragment's setRetainInstance(boolean)
...
First of all, check out my post on retained Fragments. It might help.
Now to answer your questions:
Does the fragment also retain its view state, or will this be recreated on configuration change - what exactly is "retained"?
Yes, the Fragment's state will be retained across the configura...
Are there disadvantages to using a generic varchar(255) for all text-based fields?
...ng, this can make the temporary table very large.
You may also like to know that this "padding out" behavior means that a string declared with the utf8 character set pads out to three bytes per character even for strings you store with single-byte content (e.g. ascii or latin1 characters). And l...
visual c++: #include files from other projects in the same solution
...tory in the Additional Include Directories already, so Visual Studio will know where to look for it.
If you don't want to add every header file location in the project settings, you could just include a directory up to a point, and then #include relative to that point:
// In project settings
Addit...
Why do we need message brokers like RabbitMQ over a database like PostgreSQL?
...ated to be an in-memory key-value store(though it does much more than that now; its even referred to as a swiss army knife). Still, I've read/heard many people achieving good results with Redis for smaller sized projects, but haven't heard much about it in larger applications.
Here is an example of...
Retaining file permissions with Git
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The link to git-cache-meta is dead - can someone who knows about this locate it and edit the post?
– rosuav
Nov 20 '16 at 8:46
...
Difference between Static and final?
...Class.
public class MyClass {
public static int myVariable = 0;
}
//Now in some other code creating two instances of MyClass
//and altering the variable will affect all instances
MyClass instance1 = new MyClass();
MyClass instance2 = new MyClass();
MyClass.myVariable = 5; //This change is ...
Maven project version inheritance - do I have to specify the parent version?
...May 14 '12 at 11:20
Michał KalinowskiMichał Kalinowski
13.5k44 gold badges3030 silver badges4444 bronze badges
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JavaScript dependency management: npm vs. bower vs. volo [closed]
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@Nate The name is simply where it started. NPM is now a very general purpose package management system. I regularly use npm to install front-end modules. There is no difference in using NPM for commonjs modules, vs amd, vs anything else. You could use npm just as well for no...