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What is a clean, pythonic way to have multiple constructors in Python?
...rgument, and the constructors do not share code.
Example:
class MyClass(set):
def __init__(self, filename):
self._value = load_from_file(filename)
@classmethod
def from_somewhere(cls, somename):
obj = cls.__new__(cls) # Does not call __init__
super(MyClass, ...
Javascript roundoff number to nearest 0.5
Can someone give me an idea how can i round off a number to the nearest 0.5.
I have to scale elements in a web page according to screen resolution and for that i can only assign font size in pts to 1, 1.5 or 2 and onwards etc.
...
In C#, What is a monad?
There is a lot of talk about monads these days. I have read a few articles / blog posts, but I can't go far enough with their examples to fully grasp the concept. The reason is that monads are a functional language concept, and thus the examples are in languages I haven't worked with (since I haven'...
How to remove files and directories quickly via terminal (bash shell) [closed]
...he right thing. You can specify these with -r or not; it's an independent setting.
And as usual, you can combine switches: rm -r -i is just rm -ri, and rm -r -f is rm -rf.
Also note that what you're learning applies to bash on every Unix OS: OS X, Linux, FreeBSD, etc. In fact, rm's syntax is the...
How to search for a string in text files?
I want to check if a string is in a text file. If it is, do X. If it's not, do Y. However, this code always returns True for some reason. Can anyone see what is wrong?
...
Must qualify the allocation with an enclosing instance of type GeoLocation
...
Another option, and the one I prefer, would be to set the inner class to be static.
public static class ThreadTask implements Runnable { ... }
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How can I detect if a file is binary (non-text) in python?
...mple Apache distributes with a mime.types file that you could parse into a set of lists, binary and text and then check to see if the mime is in your text or binary list.
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How to pass arguments to a Button command in Tkinter?
...andle(btn['command'])
You can simply think that command option should be set as, the reference to the method we want to be called, similar to callback in button_press_handle.
Calling a Method(Callback) When the Button is Pressed
Without arguments
So if I wanted to print something when the bu...
Pandoc markdown page break
...ch '\\newpage' then
-- use format-specific pagebreak marker. FORMAT is set by pandoc to
-- the targeted output format.
return newpage(FORMAT)
end
-- otherwise, leave the block unchanged
return nil
end
We published an updated, more featureful version. It's available from the offic...
How to force a web browser NOT to cache images
...imageFile.jpg&some-random-number-262376" />
Script:
// PHP
if( isset( $_GET['img'] ) && is_file( IMG_PATH . $_GET['img'] ) ) {
// read contents
$f = open( IMG_PATH . $_GET['img'] );
$img = $f.read();
$f.close();
// no-cache headers - complete set
// these copied from ...