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How to define two fields “unique” as couple
... constraints features UniqueConstraint is preferred over unique_together.
From the Django documentation for unique_together:
Use UniqueConstraint with the constraints option instead.
UniqueConstraint provides more functionality than unique_together.
unique_together may be deprecated in the ...
How can I calculate the time between 2 Dates in typescript
...
@KenLyon From MDN getTime documentation: You can use this method to help assign a date and time to another Date object. This method is functionally equivalent to the valueOf() method.
– PhoneixS
...
Merging two images in C#/.NET
...n over a frame of a video:
Image playbutton;
try
{
playbutton = Image.FromFile(/*somekindofpath*/);
}
catch (Exception ex)
{
return;
}
Image frame;
try
{
frame = Image.FromFile(/*somekindofpath*/);
}
catch (Exception ex)
{
return;
}
using (frame)
{
using (var bitmap = new Bitm...
How to get the parents of a Python class?
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Use the following attribute:
cls.__bases__
From the docs:
The tuple of base classes of a class
object.
Example:
>>> str.__bases__
(<type 'basestring'>,)
Another example:
>>> class A(object):
... pass
...
>>> class B(obje...
CSS content property: is it possible to insert HTML instead of Text?
...here are a lot of limitations :
You can not load any external resources from this markup (no CSS, no images, no media etc.).
You can not execute script.
Since this won't be part of the DOM, the only way to alter it, is to pass the markup as a dataURI, and edit this dataURI in document.styleSheets...
How do I change the background color of a plot made with ggplot2
... to remove the gray background, and any other features that might distract from the map.
theme_map <- function (base_size = 12, base_family = "") {
theme_gray(base_size = base_size, base_family = base_family) %+replace%
theme(
axis.line=element_blank(),
axis....
Debug a java application without starting the JVM with debug arguments
...
It seems SADebugServerAttachingConnector was removed from jdb as well, and I think the replacement is supposed to be jhsdb hsdb / jhsdb clhsdb. I can't find any docs on what arguments to give to jhsdb clhsdb.
– Delthas
May 1 at 4:20
...
Function that creates a timestamp in c#
I was wondering, is there a way to create a timestamp in c# from a datetime?
I need a millisecond precision value that also works in Compact Framework(saying that since DateTime.ToBinary() does not exist in CF).
...
Reset other branch to current without a checkout
...his works without refs/heads (/cc @elliottcable), and it also prevents you from updating the checked-out branch. Note that you may need to pass -f (or use +current:other) if the update isn't a fast-forward.
– Lily Ballard
Jun 6 '13 at 7:41
...
React.js: Wrapping one component into another
...it easy to pass the props down do children component (in this case Hello). From React 0.14.* onwards the only way to pass props to children components would be to use React.createClone, which might be expensive.
– Mukesh Soni
Sep 10 '15 at 18:47
...