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Calling a class function inside of __init__
I'm writing some code that takes a filename, opens the file, and parses out some data. I'd like to do this in a class. The following code works:
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What is the purpose of willSet and didSet in Swift?
...seems to be that sometimes, you need a property that has automatic storage and some behavior, for instance to notify other objects that the property just changed. When all you have is get/set, you need another field to hold the value. With willSet and didSet, you can take action when the value is mo...
java get file size efficiently
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Well, I tried to measure it up with the code below:
For runs = 1 and iterations = 1 the URL method is fastest most times followed by channel. I run this with some pause fresh about 10 times. So for one time access, using the URL is the fastest way I can think of:
LENGTH sum: 10626, per It...
How do I get the path of the Python script I am running in? [duplicate]
...in: Perhaps you tried the expression in the shell?
– André Laszlo
May 28 '10 at 15:44
15
Make a ...
std::vector performance regression when enabling C++11
...ode the generated code is significantly more cluttered than for C++98 mode and inlining the function
void std::vector<Item,std::allocator<Item>>::_M_emplace_back_aux<Item>(Item&&)
fails in C++11 mode with the default inline-limit.
This failed inline has a domino effect. N...
How to find the duration of difference between two dates in java?
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try the following
{
Date dt2 = new DateAndTime().getCurrentDateTime();
long diff = dt2.getTime() - dt1.getTime();
long diffSeconds = diff / 1000 % 60;
long diffMinutes = diff / (60 * 1000) % 60;
long diffHours = diff / (60 * 60 * 1...
How can I make a time delay in Python? [duplicate]
...l... it'll print less frequently than that, because it takes time to print and handle all the buffers that entails (possibly doing a kernel context switch), and to register the alarm signal, but... yeah. A little under once per minute.
– Parthian Shot
Jun 17 '1...
Find all packages installed with easy_install/pip?
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pip freeze will output a list of installed packages and their versions. It also allows you to write those packages to a file that can later be used to set up a new environment.
https://pip.pypa.io/en/stable/reference/pip_freeze/#pip-freeze
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How to install Boost on Ubuntu
I'm on Ubuntu, and I want to install Boost. I tried with
7 Answers
7
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How can I represent an 'Enum' in Python?
... in PEP 435. It has also been backported to 3.3, 3.2, 3.1, 2.7, 2.6, 2.5, and 2.4 on pypi.
For more advanced Enum techniques try the aenum library (2.7, 3.3+, same author as enum34. Code is not perfectly compatible between py2 and py3, e.g. you'll need __order__ in python 2).
To use enum34, do...