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Singleton: How should it be used
Edit:
From another question I provided an answer that has links to a lot of questions/answers about singletons: More info about singletons here:
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How to install a private NPM module without my own registry?
...nt to upload to the central registry. The question is, how do I install it from other projects?
14 Answers
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What methods of ‘clearfix’ can I use?
...pose!
Thierry also offers: "A word of caution: if you start a new project from scratch, go for it, but don’t swap this technique with the one you have now, because even though you do not support oldIE, your existing rules prevent collapsing margins."
Micro Clearfix
The most recent and globall...
Unique BooleanField value in Django?
...if you've set the boolean to True, make sure all others are set to False.
from django.db import transaction
class Character(models.Model):
name = models.CharField(max_length=255)
is_the_chosen_one = models.BooleanField()
def save(self, *args, **kwargs):
if not self.is_the_chos...
Converting RGB to grayscale/intensity
When converting from RGB to grayscale, it is said that specific weights to channels R, G, and B ought to be applied. These weights are: 0.2989, 0.5870, 0.1140.
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Generator Expressions vs. List Comprehension
... example, itertools.count(n) is an infinite sequence of integers, starting from n, so (2 ** item for item in itertools.count(n)) would be an infinite sequence of the powers of 2 starting at 2 ** n.
– Kevin
Jun 1 '15 at 1:48
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How to log out user from web site using BASIC authentication?
Is it possible to log out user from a web site if he is using basic authentication?
22 Answers
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Github Windows 'Failed to sync this branch'
... of some conflicting changes. I removed the local repository of my project from my desktop and then cloned it again from the github website (using clone option in my account), the error was gone.
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Remove Trailing Slash From String PHP
Is it possible to remove the trailing slash / from a string using PHP?
5 Answers
5
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Will the base class constructor be automatically called?
... What you say is true. However, there is nothing preventing Base from having a parameterless constructor in addition to the parameterized constructor that set SomeNumber to, say, a random number. AlwaysThreeDerived would still use the base(3) call, but another class (call it RandomDerived...