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Painless way to install a new version of R?
...Windows than Linux). Does anyone have a good trick for doing the upgrade, from installing the software to copying all the settings/packages over?
...
Single Line Nested For Loops
...ften faster than using a for loop.
Look at this longer list comprehension from the tutorial (the if part filters the comprehension, only parts that pass the if statement are passed into the final part of the list comprehension (here (x,y)):
>>> [(x, y) for x in [1,2,3] for y in [3,1,4] if...
Event system in Python
...12
py-notify 0.3.1: 2008
There's more
That's a lot of libraries to choose from, using very different terminology (events, signals, handlers, method dispatch, hooks, ...).
I'm trying to keep an overview of the above packages, plus the techniques mentioned in the answers here.
First, some terminology...
git pull from master into the development branch
I have a branch called dmgr2 (development) and I want to pull from the master branch (live site) and incorporate all the changes into my development branch. is there a better way to do this?
here is what I had planned on doing, after committing changes:
...
How to process SIGTERM signal gracefully?
...down gracefully. The False value is set only once, and then it can only go from False to True so multiple access is not an issue.
– Alceste_
Jul 25 '18 at 15:35
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How can I move a single directory from a git repository to a new repository whilst maintaining the h
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You can use git filter-branch to rewrite the history of a project. From the documentation:
To rewrite the repository to look as
if foodir/ had been its project root,
and discard all other history:
git filter-branch --subdirectory-filter foodir -- --all
Make several copies of your...
Get operating system info
...P as the operating system.
Using: '/windows nt 5.1/i' => 'Windows XP', from an array.
You could say guesswork, or an approximation yet nonetheless pretty much bang on.
Borrowed from an answer on SO https://stackoverflow.com/a/15497878/
<?php
$user_agent = $_SERVER['HTTP_USER_AGENT'];
fun...
Reading string from input with space character? [duplicate]
...ewline ('\n') take input. Then with the %*c it reads the newline character from the input buffer (which is not read), and the * indicates that this read in input is discarded (assignment suppression), as you do not need it, and this newline in the buffer does not create any problem for next inputs t...
C++ new int[0] — will it allocate memory?
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From 5.3.4/7
When the value of the expression in a direct-new-declarator is zero, the allocation function is called to allocate an array with no elements.
From 3.7.3.1/2
The effect of dereferencing a pointer returne...
efficient circular buffer?
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popping from the head of a list causes the whole list to be copied, so is inefficient
You should instead use a list/array of fixed size and an index which moves through the buffer as you add/remove items
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