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Hex representation of a color with alpha channel?
Is there a W3 or any other noteworthy standard on how to represent a color (including alpha channel) in hex format?
5 Answe...
Referring to the null object in Python
...n, the 'null' object is the singleton None.
The best way to check things for "Noneness" is to use the identity operator, is:
if foo is None:
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How do I get the current date and time in PHP?
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The time would go by your server time. An easy workaround for this is to manually set the timezone by using date_default_timezone_set before the date() or time() functions are called to.
I'm in Melbourne, Australia so I have something like this:
date_default_timezone_set...
Why does Google prepend while(1); to their JSON responses?
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It prevents JSON hijacking, a major JSON security issue that is formally fixed in all major browsers since 2011 with ECMAScript 5.
Contrived example: say Google has a URL like mail.google.com/json?action=inbox which returns the first 50 messages of your inb...
How to make a button redirect to another page using jQuery or just Javascript
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Without script:
<form action="where-you-want-to-go"><input type="submit"></form>
Better yet, since you are just going somewhere, present the user with the standard interface for "just going somewhere":
<a href="where-you-w...
JavaScript Chart Library
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There is a growing number of Open Source and commercial solutions for pure JavaScript charting that do not require Flash. In this response I will only present Open Source options.
There are 2 main classes of JavaScript solutions for graphics that do not require Flash:
Canvas-based, render...
if…else within JSP or JSTL
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Thx for that...Actually I am more into UI dev...So do not have much knowledge of JSTL..Could you please provide me a similar working example of JSTL..I mean for if..else
– testndtv
May 9 '11 ...
Java SafeVarargs annotation, does a standard or best practice exist?
I've recently come across the java @SafeVarargs annotation. Googling for what makes a variadic function in Java unsafe left me rather confused (heap poisoning? erased types?), so I'd like to know a few things:
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Difference between abstract class and interface in Python
...cted to supply."""
def aMethod( self ):
raise NotImplementedError( "Should have implemented this" )
Because Python doesn't have (and doesn't need) a formal Interface contract, the Java-style distinction between abstraction and interface doesn't exist. If someone goes through the effor...
How to use “raise” keyword in Python [duplicate]
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It has 2 purposes.
yentup has given the first one.
It's used for raising your own errors.
if something:
raise Exception('My error!')
The second is to reraise the current exception in an exception handler, so that it can be handled further up the call stack.
try:
generate_exce...