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HTML5: Slider with two inputs possible?
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No, the HTML5 range input only accepts one input. I would recommend you to use something like the jQuery UI range slider for that task.
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What is a sealed trait?
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A sealed trait can be extended only in the same file as its declaration.
They are often used to provide an alternative to enums. Since they can be only extended in a single file, the compiler knows every possible subtypes and can reason about it.
For instance with the...
100% width Twitter Bootstrap 3 template
...ave no idea how to achieve that layout with bootstrap 3. I am using the Geometry PSD template from themeforest, the link here if you want to see the layout : http://themeforest.net/item/geometry-design-for-geolocation-social-networkr/4752268
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Is pass-by-value a reasonable default in C++11?
In traditional C++, passing by value into functions and methods is slow for large objects, and is generally frowned upon. Instead, C++ programmers tend to pass references around, which is faster, but which introduces all sorts of complicated questions around ownership and especially around memory ma...
How does the socket API accept() function work?
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I don't know the implementation details (which probably vary from platform to platform), I just know that conceptually the sockets are identified by the quartet of information I described.
– 17 of 26
Jan 30 '...
Callback functions in C++
...irst) {
f(*first);
}
return f;
}
which can be used to first increment and then print a vector by passing appropriate callables for example:
std::vector<double> v{ 1.0, 2.2, 4.0, 5.5, 7.2 };
double r = 4.0;
std::for_each(v.begin(), v.end(), [&](double & v) { v += r; });
std::...
How do I control how Emacs makes backup files?
Emacs puts backup files named foo~ everywhere and I don't like having to remember to delete them. Also, if I edit a file that has a hard link somewhere else in the file system, the hard link points to the backup when I'm done editing, and that's confusing and awful. How can I either eliminate th...
How can I specify a branch/tag when adding a Git submodule?
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Note: Git 1.8.2 added the possibility to track branches. See some of the answers below.
It's a little confusing to get used to this, but submodules are not on a branch. They are, like you say, just a pointer to a particular commit of the submodule's repository.
This means, when some...
In a storyboard, how do I make a custom cell for use with multiple controllers?
...there are Lists and Users and each contains a collection of the other (members of a list, lists owned by a user). So, accordingly, I have ListCell and UserCell classes. The goal is to have those be re-usable throughout the app (ie, in any of my tableview controllers).
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What are the differences between delegates and events?
... declare an event without a backend delegate instance. In c#, you can implement an event explicitly and use a different backend data structure of your choice.
– Miguel Gamboa
Feb 18 '15 at 11:23
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