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Difference between abstraction and encapsulation?
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Abstraction is a mechanism which represent the essential features without including implementation details.
Encapsulation:-- Information hiding.
Abstraction:-- Implementation hiding.
Example:
class foo{
private:
int a, b;
public:
foo(int x=0, int y=0): a(x), b(y)...
Copying files from one directory to another in Java
...ile has to be the exact path were the file should be copied to. This means including the new filename not only the directory you want to copy the file to.
– Janusz
Jul 18 '09 at 17:41
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CSS Selector “(A or B) and C”?
...which aim to extend default CSS syntax by introducing additional features, including variables, nested rules, and other enhancements.
They allow you to write much more structured CSS code, and either of them will almost certainly solve your particular use case.
Of course, none of the browsers supp...
How do I prevent the modification of a private field in a class?
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You make the assumption here that the array including the strings is copied each time. It isn't, only the references to the immutable strings are copied. As long as your array is not huge, the overhead is negligible. If the array is huge, go for lists and immutableList...
Setting Short Value Java
...0;
In your setLongValue(100L) method call, you don't have to necessarily include the L suffix because in this case the int literal is automatically widened to a long. This is called widening primitive conversion in the Java Language Specification.
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Forward host port to docker container
...following command, which assumes your image is called my_image, your image includes the telnet utility, and the service you want to connect to is on port 25:
docker run --rm -i -t --net=host my_image telnet localhost 25
If you consider doing it this way, please see the caution about security on ...
How to place the ~/.composer/vendor/bin directory in your PATH?
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The thing I echo $PATH does not include the composer part.. I have literally added it over 100 times in all the possible ways, rebooted about 5 times an reloaded bashrc.. nothing. Any idea?
– nclsvh
Mar 8 '17 at 9:06
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Serializing an object as UTF-8 XML in .NET
...y difference until it's converted to binary (which could use any encoding, including UTF-8). The TextWriter.Encoding property is used by the XML serializer to determine which encoding name to specify within the document itself.
– Jon Skeet
Oct 5 '10 at 9:30
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What is android:weightSum in android, and how does it work?
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The documentation says it best and includes an example, (highlighting mine).
android:weightSum
Defines the maximum weight sum. If unspecified, the sum is computed by
adding the layout_weight of all of the children. This can be used for
instance t...
Missing XML comment for publicly visible type or member
...ess Warnings for XML comments
(not my work, but I found it useful so I've included the article & link)
http://bernhardelbl.wordpress.com/2009/02/23/suppress-warnings-for-xml-comments/
Here i will show you, how you can suppress warnings for XML comments after a Visual Studio build.
Background...