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Why are you not able to declare a class as static in Java?
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Only nested classes can be static. By doing so you can use the nested class without having an instance of the outer class.
class OuterClass{
public static class StaticNestedClass{
}
public class InnerClass{
}
public InnerClass getAnInner...
How can you determine how much disk space a particular MySQL table is taking up?
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For a table mydb.mytable run this for:
BYTES
SELECT (data_length+index_length) tablesize
FROM information_schema.tables
WHERE table_schema='mydb' and table_name='mytable';
KILOBYTES
SELECT (data_length+index_length)/power(1024,1) tablesize_kb
FROM information_...
What is “X-Content-Type-Options=nosniff”?
...ed
MIME Confusion Attack enables attacks via user generated content sites by allowing users uploading malicious code that is then executed by browsers which will interpret the files using alternate content types, e.g. implicit application/javascript vs. explicit text/plain. This can result in a "dr...
Why are dates calculated from January 1st, 1970?
...nts, I can see why you'd do it that way, but man. my world is shattered. by 24 seconds.
– keturn
Mar 28 '10 at 19:08
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What is the difference between trie and radix trie data structures?
...our items, there are fourteen nodes in total. They all have the first four bytes (corresponding to the first four nodes) in common, however. By condensing those four bytes to create a root that corresponds to ['s']['m']['i']['l'], four node accesses have been optimised away. That means less memory a...
Disable JavaScript error in WebBrowser control
...es most scenarios, except, for example WebBrowser.GoBack, which is handled by Navigated. Navigated alone would miss a page being refreshed.)
– Ej.
Mar 19 '13 at 17:31
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Javascript seconds to minutes and seconds
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To get the number of full minutes, divide the number of total seconds by 60 (60 seconds/minute):
var minutes = Math.floor(time / 60);
And to get the remaining seconds, multiply the full minutes with 60 and subtract from the total seconds:
var seconds = time - minutes * 60;
Now if you also...
Encapsulation vs Abstraction?
...to its state.
Abstraction is a more generic term, it can also be achieved by (amongst others) subclassing. For example, the interface List in the standard library is an abstraction for a sequence of items, indexed by their position, concrete examples of a List are an ArrayList or a LinkedList. Code...
How to check if a service is running on Android?
...ly using a static field in the service class to toggle state, as described by hackbod here
EDIT (for the record):
Here is the solution proposed by hackbod:
If your client and server code is part of the same .apk and you are
binding to the service with a concrete Intent (one that specifies t...
git pushes with wrong user from terminal
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github identifies you by the ssh key it sees, not by any setting from git.
Therefore, you need to ensure that your work account's ssh key is not in your keyring when you try to push from your personal account and vice versa.
Use ssh-add -l to d...