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The imported project “C:\Microsoft.CSharp.targets” was not found
...folder (it will be near by or one step up to your current project folder).
Then restart the project or solution.
Now, Rebuild solution file.
Project will get new references from nuGet package manager. And your issue has been resolved.
This is not proper solution, but I posted it here because I fac...
Add a default value to a column through a migration
...ld use def up and def down
So if you have a column with no default value, then you should do this to add a default value.
def up
change_column :users, :admin, :boolean, default: false
end
def down
change_column :users, :admin, :boolean, default: nil
end
Or if you want to change the default ...
Eclipse error: 'Failed to create the Java Virtual Machine'
...gi.requiredJavaVersion=1.7
OR
-Xmx512m
-Dosgi.requiredJavaVersion=1.8
Then it works well for me.
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How do I get the object if it exists, or None if it does not exist?
...**kwargs)
except ObjectDoesNotExist:
return None
And then in your model:
class MyModel(models.Model):
objects = MyManager()
That's it.
Now you have MyModel.objects.get() as well as MyModel.objetcs.get_or_none()
...
How to squash commits in git after they have been pushed?
...
Squash commits locally with
git rebase -i origin/master~4 master
and then force push with
git push origin +master
Difference between --force and +
From the documentation of git push:
Note that --force applies to all the refs that are pushed, hence using
it with push.default set t...
How to center canvas in html5
...ed to use absolute positioning, and specify both the width and the height. Then set the left, right, top and bottom properties to 0 and let the browser fill the remaining space with the auto margins.
canvas {
padding: 0;
margin: auto;
display: block;
width: 800px;
height: 600px;...
JavaScript code to stop form submission
...'s correct code. So unless you can point out the case where it won't work, then you don't have a point at all.
– Danial
Oct 3 '17 at 19:56
...
DatabaseError: current transaction is aborted, commands ignored until end of transaction block?
...n, but want to avoid explicit transaction handling code all over the place then you might want to look into turning on autocommit mode (PostgreSQL 8.2+): https://docs.djangoproject.com/en/dev/ref/databases/#autocommit-mode
DATABASES['default'] = {
#.. you usual options...
'OPTIONS': {
...
indexOf method in an object array?
...with 1000 elements, you've created another array with 1000 elements first, then search it? It would be worthwhile I think to see the performance of this method vs. a simple for loop. Especially when you're running on a mobile platform with limited resources.
– Doug
...
How to find out which package version is loaded in R?
...
GUI solution:
If you are using RStudio then you can check the package version in the Packages pane.
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