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How is __eq__ handled in Python and in what order?
...or Python 3 to this question.
How is __eq__ handled in Python and in what order?
a == b
It is generally understood, but not always the case, that a == b invokes a.__eq__(b), or type(a).__eq__(a, b).
Explicitly, the order of evaluation is:
if b's type is a strict subclass (not the same type) of a...
HTML “overlay” which allows clicks to fall through to elements behind it [duplicate]
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You can use an overlay with opacity set in order to the buttons/anchors in the back stay visible, but once you have that overlay over an element, you can't click it.
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Using semicolon (;) vs plus (+) with exec in find
...ecute multiple commands (separately for each argument),
Example:
$ find /etc/rc* -exec echo Arg: {} ';'
Arg: /etc/rc.common
Arg: /etc/rc.common~previous
Arg: /etc/rc.local
Arg: /etc/rc.netboot
All following arguments to find are taken to be arguments to the command.
The string {} is repl...
Supervisor socket error issue [closed]
...visord before you can use supervisorctl. In my case:
sudo supervisord -c /etc/supervisor/supervisord.conf
sudo supervisorctl -c /etc/supervisor/supervisord.conf
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What does functools.wraps do?
...@wim: I've written some decorators which do their own version of @wraps in order to perform various types of modification or annotation on the values copied over. Fundamentally, it's an extension of the Python philosophy that explicit is better than implicit and special cases aren't special enough t...
Determine if 2 lists have the same elements, regardless of order? [duplicate]
...the esoteric case of unhashable and unsortable elements.
def equal_ignore_order(a, b):
""" Use only when elements are neither hashable nor sortable! """
unmatched = list(b)
for element in a:
try:
unmatched.remove(element)
except ValueError:
return...
How to find what code is run by a button or element in Chrome using Developer Tools
...Query's abstraction and functionality, a lot of hoops have to be jumped in order to get to the meat of the event. I have set up this jsFiddle to demonstrate the work.
1. Setting up the Event Listener Breakpoint
You were close on this one.
Open the Chrome Dev Tools (F12), and go to the Sources ...
Type List vs type ArrayList in Java [duplicate]
...Resizable-array implementation of the List interface.
Interface List - An ordered collection (also known as a sequence). The user of this interface has precise control over where in the list each element is inserted.
Array - container object that holds a fixed number of values of a single type.
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How to get the parents of a Python class?
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Usefully, this gives you all ancestor classes in the "method resolution order" -- i.e. the order in which the ancestors will be checked when resolving a method (or, actually, any other attribute -- methods and other attributes live in the same namespace in Python, after all;-).
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Iterating over all the keys of a map
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As a possible gotcha, note that the order of the iteration is undefined. groups.google.com/d/msg/golang-nuts/YfDxpkI34hY/4pktJI2ytusJ
– mna
Sep 22 '12 at 2:18
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