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Is there a way to override class variables in Java?
...e).Just don't declare the variable but initialize (change) in the constructor or static block.
The value will get reflected when using in the blocks of parent class
if the variable is static then change the value during initialization itself with static block,
class Son extends Dad {
static {...
How to insert an item into an array at a specific index (JavaScript)?
I am looking for a JavaScript array insert method, in the style of:
19 Answers
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Is Chrome's JavaScript console lazy about evaluating arrays?
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Thanks for the comment, tec. I was able to find an existing unconfirmed Webkit bug that explains this issue: https://bugs.webkit.org/show_bug.cgi?id=35801 (EDIT: now fixed!)
There appears to be some debate regarding just how much o...
Standard concise way to copy a file in Java?
...o go, specifically FileUtils.copyFile(); it handles all the heavy lifting for you.
And as a postscript, note that recent versions of FileUtils (such as the 2.0.1 release) have added the use of NIO for copying files; NIO can significantly increase file-copying performance, in a large part because th...
When is it right for a constructor to throw an exception?
When is it right for a constructor to throw an exception? (Or in the case of Objective C: when is it right for an init'er to return nil?)
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How can I generate a unique ID in Python? [duplicate]
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Perhaps uuid.uuid4() might do the job. See uuid for more information.
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In Python, how to display current time in readable format
... and dirty way, and second the precise way (recognizing daylight's savings or not).
import time
time.ctime() # 'Mon Oct 18 13:35:29 2010'
time.strftime('%l:%M%p %Z on %b %d, %Y') # ' 1:36PM EDT on Oct 18, 2010'
time.strftime('%l:%M%p %z on %b %d, %Y') # ' 1:36PM EST on Oct 18, 2010'
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How can I edit a view using phpMyAdmin 3.2.4?
...e contents of the Create View column.
Make changes to the query in the editor of your choice
Run the query directly (without the CREATE VIEW... syntax) to make sure it runs as you expect it to.
Once you're satisfied, click on your view in the list on the left to browse its data and then scroll all t...
How to get a URL parameter in Express?
...sion of express are you using? I just tested this on express-3.4.4 and it works fine.
– maček
Nov 20 '13 at 7:20
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Definition of a Balanced Tree
...ing if someone might be able to clarify the definition of a balanced tree for me. I have that "a tree is balanced if each sub-tree is balanced and the height of the two sub-trees differ by at most one.
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