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Why is Python 3.x's super() magic?
In Python 3.x, super() can be called without arguments:
1 Answer
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Why does String.valueOf(null) throw a NullPointerException?
... overloaded:
String.valueOf(Object)
String.valueOf(char[])
Java Specification Language mandates that in these kind of cases, the most specific overload is chosen:
JLS 15.12.2.5 Choosing the Most Specific Method
If more than one member method is both accessible and applicable to a method in...
Adding additional data to select options using jQuery
...1" data-foo="dogs">this</option>
<option value="2" data-foo="cats">that</option>
<option value="3" data-foo="gerbils">other</option>
</select>
Code
// JavaScript using jQuery
$(function(){
$('select').change(function(){
var selected = $(this)....
Emulate ggplot2 default color palette
What function can I use to emulate ggplot2's default color palette for a desired number of colors. For example, an input of 3 would produce a character vector of HEX colors with these colors:
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Is it OK to leave a channel open?
...for a close. Closing the channel is a control signal on the
channel indicating that no more data follows.
Design Question: Channel Closing
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Routing: The current request for action […] is ambiguous between the following action methods
I have a View called Browse.chtml , where the user can enter a search term, or leave the search term blank. When entering the search term, I want to direct the page to http://localhost:62019/Gallery/Browse/{Searchterm} and when nothing is entered, I want to direct the browser to http://localho...
String formatting in Python 3
...h index 0, with decimal integer format.
There are many others things you can do when selecting an argument (using named arguments instead of positional ones, accessing fields, etc) and many format options as well (padding the number, using thousands separators, showing sign or not, etc). Some othe...
Python “raise from” usage
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The difference is that when you use from, the __cause__ attribute is set and the message states that the exception was directly caused by. If you omit the from then no __cause__ is set, but the __context__ attribute may be set as well, and the traceback then shows the cont...
Do regular expressions from the re module support word boundaries (\b)?
...arn a little more about regular expressions, a tutorial suggested that you can use the \b to match a word boundary. However, the following snippet in the Python interpreter does not work as expected:
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Class method decorator with self arguments?
...first argument is the instance, so it reads the attribute off of that. You can pass in the attribute name as a string to the decorator and use getattr if you don't want to hardcode the attribute name:
def check_authorization(attribute):
def _check_authorization(f):
def wrapper(self, *ar...