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How to 'bulk update' with Django?
...e to use:
ModelClass.objects.filter(name='bar').update(name="foo")
You can also use F objects to do things like incrementing rows:
from django.db.models import F
Entry.objects.all().update(n_pingbacks=F('n_pingbacks') + 1)
See the documentation.
However, note that:
This won't use ModelCla...
Understanding what 'type' keyword does in Scala
I am new to Scala and I could not really find a lot about the type keyword. I am trying to understand what the following expression may mean:
...
Scala actors: receive vs react
...come interested in functional languages. Recently I've started looking at Scala, which seems like a very nice language.
5 A...
Overlaying histograms with ggplot2 in R
...are visible through each other. So you probably want to use three separate calls to geom_histogram, where each one gets it's own data frame and fill:
ggplot(histogram, aes(f0)) +
geom_histogram(data = lowf0, fill = "red", alpha = 0.2) +
geom_histogram(data = mediumf0, fill = "blue", alpha...
PHP shell_exec() vs exec()
...ream as a string. exec returns the last line of the output by default, but can provide all output as an array specifed as the second parameter.
See
http://php.net/manual/en/function.shell-exec.php
http://php.net/manual/en/function.exec.php
...
Rebasing a branch including all its children
...h mass automated rebasing.
So here it is. Use it by saving it into a file called git-auto-rebase in your PATH. It's probably also a good idea to use the dry run (-n) option before you try it for real. It may be a little more detail than you really want, but it will show you what it's going to try t...
How Do I Fetch All Old Items on an RSS Feed?
I've been experimenting with writing my own RSS reader. I can handle the "parse XML" bit. The thing I'm getting stuck on is "How do I fetch older posts?"
...
Emulating a do-while loop in Bash
...ly exits with 0 (and false with 1) the latter does absolutely nothing. You can check with which true.
– Fleshgrinder
Dec 2 '19 at 7:01
...
Python naming conventions for modules
I have a module whose purpose is to define a class called "nib". (and a few related classes too.) How should I call the module itself? "nib"? "nibmodule"? Anything else?
...
Typescript: difference between String and string
... using the String object.
string is the TypeScript string type, which you can use to type variables, parameters and return values.
Additional notes...
Currently (Feb 2013) Both s1 and s2 are valid JavaScript. s3 is valid TypeScript.
Use of String. You probably never need to use it, string litera...