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What are the disadvantages to declaring Scala case classes?
... represented as a class
hierarchy, with an abstract base class Expr as the root, and two
subclasses Number and Sum. Then, an expression 1 + (3 + 7) would be represented as
new Sum( new Number(1), new Sum( new Number(3), new Number(7)))
abstract class Expr {
def eval: Int
}
class Number(n: Int) e...
When is the init() function run?
...it of that sub-package will be called(once) first of all. The same for the root package of the library, etc...
There are many times when you may want a code block to be executed without the existence of a main func, directly or not.
If you, as the developer of the imaginary library, import your l...
How to secure an ASP.NET Web API [closed]
...e you add the package to your project, it will create a readme file in the root of your project. You can look at that readme file to see how to configure/use this package.
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Where to put view-specific javascript files in an ASP.NET MVC application?
...he views folder, and here's how I did it:
In the web.config folder in the root of /Views you need to modify two sections to enable the webserver to serve the files:
<system.web>
<httpHandlers>
<add path="*.js" verb="GET,HEAD" type="System.Web.StaticFileHandle...
How to un-submodule a Git submodule?
...n
>&2 echo "Error: No git repository found. Must be run from the root of a git repository"
usage
exit 1
fi
declare path="$(git config -f .gitmodules --get "submodule.${sub}.path")"
declare url="$(git config -f .gitmodules --get "submodule.${sub}.url")"
if [ -z "${path}" ]; then
>...
Isn't it silly that a tiny favicon requires yet another HTTP request? How can I put the favicon into
.../x-icon" /><![endif]--> `
Include the favicon.ico file in your root directory to cover browsers that will request it either way, since for those browsers, if they're already checking no matter what you do, you might as well not waste the HTTP request with a 404 response.
You could als...
C pointers : pointing to an array of fixed size
...er declaration without giving it a further thought. In reality though, the root of the problem lies in the naive malloc approach. The malloc format shown above should be reserved for arrays of run-time size. If the array type has compile-time size, a better way to malloc it would look as follows
ch...
How do I work with a git repository within another repository?
... from within Apache's www folder, you should place a .htaccess file in the root of either the www folder or your project's, with Options +FollowSymLinks in it, or better yet <IfModule mod_rewrite.c>{new line}Options +FollowSymLinks{new line}RewriteEngine on{new line}</IfModule> (replace...
What's the difference between SoftReference and WeakReference in Java?
... system where you'd load a file, parse it, and keep
a SoftReference to the root object of the parsed representation. Next time
you need the file, you'll try to retrieve it through the SoftReference. If
you can retrieve it, you spared yourself another load/parse, and if the GC
cleared it in the meant...
Why can't decimal numbers be represented exactly in binary?
...
The root (mathematical) reason is that when you are dealing with integers, they are countably infinite.
Which means, even though there are an infinite amount of them, we could "count out" all of the items in the sequence, withou...