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Python: changing value in a tuple
...t is better not to assume that the original poster is creating all of this from scratch doesn't know any better. More often we are dealing with output from another module or data source in a format or type that we cant control.
– rtphokie
Jan 6 '18 at 17:15
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Reducing Django Memory Usage. Low hanging fruit?
...ping global references to data. That prevents the python garbage collector from releasing the memory.
Don't use mod_python. It loads an interpreter inside apache. If you need to use apache, use mod_wsgi instead. It is not tricky to switch. It is very easy. mod_wsgi is way easier to configure for dj...
Is Java Regex Thread Safe?
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Yes, from the Java API documentation for the Pattern class
Instances of this (Pattern) class are immutable and are safe for use by multiple concurrent threads. Instances of the Matcher class are not safe for such use.
If you a...
Objective-C ARC: strong vs retain and weak vs assign
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From the Transitioning to ARC Release Notes (the example in the section on property attributes).
// The following declaration is a synonym for: @property(retain) MyClass *myObject;
@property(strong) MyClass *myObject;
So ...
Why would you use an ivar?
...hiving/serialization implementations.
It's also more frequent as one moves from the everything has a public readwrite accessor mindset to one which hides its implementation details/data well. Sometimes you need to correctly step around side effects a subclass' override may introduce in order to do t...
Why do C++ libraries and frameworks never use smart pointers?
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Apart from the fact that many libraries were written before the advent of standard smart pointers, the biggest reason is probably the lack of a standard C++ Application Binary Interface (ABI).
If you’re writing a header-only lib...
Excel VBA App stops spontaneously with message “Code execution has been halted”
From what I can see on the web, this is a fairly common complaint, but answers seem to be rarer. The problem is this:
11 An...
Physical vs. logical / soft delete of database record?
...he time we didn't know what the requirements would be. While this was good from the standpoint of auditing, troubleshooting, and reporting (This was an e-commerce / tools site for B2B transactions, and if someone used a tool, we wanted to record it even if their account was later turned off), it did...
How to print a percentage value in python?
...3%
If you don't want integer division, you can import Python3's division from __future__:
>>> from __future__ import division
>>> 1 / 3
0.3333333333333333
# The above 33% example would could now be written without the explicit
# float conversion:
>>> print "{0:.0f}%".f...
jQuery - prevent default, then continue default
...-> in async callback fill some fields in the form -> submit the form from the callback"
– The Godfather
Oct 11 '16 at 14:49
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