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When saving, how can you check if a field has changed?
...mixin that tracks model fields' values and provide some useful api
to know what fields have been changed.
"""
def __init__(self, *args, **kwargs):
super(ModelDiffMixin, self).__init__(*args, **kwargs)
self.__initial = self._dict
@property
def diff(self):
...
Class vs. static method in JavaScript
I know this will work:
14 Answers
14
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How do shift operators work in Java? [duplicate]
...00000000000
System.out.println(Integer.toBinaryString(2 << 33));
Now, int is of 4 bytes,hence 32 bits. So when you do shift by 33, it's equivalent to shift by 1. Hence : 100
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improv...
Python, Unicode, and the Windows console
...e and system console is not necessarily the best combination, but I don't know enough about this, so if you need a definite answer, post a question here on SO about it.
– Lasse V. Karlsen
Jul 13 '14 at 12:05
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How will I know when to create an interface?
...robably implement IWalkable, the latter two don't walk, so they wouldn't. Now you ask "why not just have another superclass, WalkingAnimal, that Dog and Cow derive from?". The answer is when you have something completely outside the inheritance tree that also can walk, such as a robot. Robot woul...
Is it possible to use a div as content for Twitter's Popover
I am using twitter's bootstrap's popover here . Right now, when i scroll over the popover text a popover appears with just text from the <a> 's data-content attribute. I was wondering if there was anyway to put a <div> inside the popover. Potentially, I would like to use php and...
Bubble Sort Homework
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To explain why your script isn't working right now, I'll rename the variable unsorted to sorted.
At first, your list isn't yet sorted. Of course, we set sorted to False.
As soon as we start the while loop, we assume that the list is already sorted. The idea is this: as ...
An App ID with Identifier '' is not available. Please enter a different string
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update
As of Xcode 8, iOS Team Provision Profile Managed by Xcode are now updated by Xcode automatically and correctly. They are not even listed at the Developer Portal, but generated on-the-flight.
However, the solution proposed below will still work. I've switched to using the automatic pro...
Configuring Git over SSH to login once
...gen or ssh-add. In my ~/.ssh/ directory I only have two files: config and known_hosts. It seems that ssh-add requires another file ~/.ssh/id_rsa. Should I create that file first using ssh-keygen as @Jefromi explained?
– reprogrammer
Oct 20 '09 at 17:22
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Excel: last character/string match in a string
...ink how to apply without lengthy recursive algorithm. And this solution now seems obsolete.
12 Answers
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