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What are the differences between concepts and template constraints?
...ies. In the current proposal for constraints, they are expressed with a subset of propositional calculus using logical connectives like && and ||.
Let's take a look at a constraint in action:
template <typename Cont>
requires Sortable<Cont>()
void sort(Cont& container);
...
Are the days of passing const std::string & as a parameter over?
...the optimizations these talks/articles focus on apply only to a restricted set of cases.
If you're returning a value, mutating the parameter, or taking the value, then passing by value could save expensive copying and offer syntactical convenience.
As ever, passing by const reference saves much co...
Where are Docker images stored on the host machine?
...his will be aufs but the RedHats went with devicemapper.
You can manually set the storage driver with the -s or --storage-driver= option to the Docker daemon.
/var/lib/docker/{driver-name} will contain the driver specific storage for contents of the images.
/var/lib/docker/graph/<id> now ...
What is the definition of “interface” in object oriented programming
...take.
In object oriented programming, an interface generally defines the set of methods (or messages) that an instance of a class that has that interface could respond to.
What adds to the confusion is that in some languages, like Java, there is an actual interface with its language specific sem...
PCH File in Xcode 6
...w...and don't forget to add it to your LLVM6.0 - Language section of Build Settings as Project/whateveryounamedyourpchfile.pch
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How do I measure separate CPU core usage for a process?
...etime, not the last X seconds, so you'll need to restart your process to reset the counter.
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Failed to load the JNI shared Library (JDK)
... of all my IDEs that was still a 32-bit version on my otherwise all-64-bit setup.
Adding VM arguments, like so often mentioned, in the eclipse.ini was no use in my case (because I had only the wrong JDK/JRE to relate to.)
I was also unable to find out how to check if this Eclipse was a 32-bit or 6...
Android - Pulling SQlite database android device
... dst.close();
}
}
} catch (Exception e) {
}
Don't forget to set the permission to write on SD in your manifest, like below.
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
...
How to set the current working directory? [duplicate]
How to set the current working directory in Python?
5 Answers
5
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How do I reset the scale/zoom of a web app on an orientation change on the iPhone?
...r this on his blog Orientation and scale
Keep the Markup scalable by not setting a maximum-scale in markup.
<meta name="viewport" content="width=device-width, initial-scale=1">
Then disable scalability with javascript on load until gesturestart when you allow scalability again with this s...