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Select distinct values from a table field
...ordering when using distinct(). See the documentation under order_by()
If you don’t want any ordering to be applied to a query, not even the default ordering, call order_by() with no parameters.
and distinct() in the note where it discusses issues with using distinct() with ordering.
To que...
How to read data from a zip file without having to unzip the entire file
...p = ZipFile.Read(ExistingZipFile))
{
foreach (ZipEntry e in zip)
{
if (header)
{
System.Console.WriteLine("Zipfile: {0}", zip.Name);
if ((zip.Comment != null) && (zip.Comment != ""))
System.Console.WriteLine("Comment: {0}", zip.Comment);
System.Console....
How to get all possible combinations of a list’s elements?
...t iterable.
Combinations are emitted in lexicographic sort order. So, if the
input iterable is sorted, the
combination tuples will be produced in
sorted order.
Since 2.6, batteries are included!
share
|...
django: BooleanField, how to set the default value to true?
...
If you're just using a vanilla form (not a ModelForm), you can set a Field initial value ( https://docs.djangoproject.com/en/2.2/ref/forms/fields/#django.forms.Field.initial ) like
class MyForm(forms.Form):
my_field = fo...
Can I avoid the native fullscreen video player with HTML5 on iPhone or android?
...perty that enables/disables in line media playback in the iOS web browser (if you were writing a native app, it would be the allowsInlineMediaPlayback property of a UIWebView). By default on iPhone this is set to NO, but on iPad it's set to YES.
Fortunately for you, you can also adjust this behavi...
How do I convert a IPython Notebook into a Python file via commandline?
...
If you don't want to output a Python script every time you save, or you don't want to restart the IPython kernel:
On the command line, you can use nbconvert:
$ jupyter nbconvert --to script [YOUR_NOTEBOOK].ipynb
As a bit ...
Single Sign On across multiple domains [closed]
..., it redirects to the master domain (login.mydomain.com/master_login.php). If the user has not signed in to the master it requests authentication from the user (ie. display login page). After the user is authenticated it creates a session in a database. If the user is already authenticated it looks ...
Find the version of an installed npm package
...ist -g for globally installed packages.
You can find the version of a specific package by passing its name as an argument. For example, npm list grunt will result in:
projectName@projectVersion /path/to/project/folder
└── grunt@0.4.1
Alternatively, you can just run npm list without passing...
Batch files: How to read a file?
...
This is a pretty complex example, parsing very specific information from a particularly formatted text file, without giving any explanation. As per for /? the command would parse each line in myfile.txt, ignoring lines that begin with a semicolon, passing the 2nd and 3rd toke...
Add icon to submit button in twitter bootstrap 2
...
The only problem I have had with this approach is if there are other buttons in the form, then your form won't submit when pressing the enter key on the keyboard, as one of the other buttons will take precedence. Any known workarounds?
– Jeshurun
...