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Reload django object from database
...k=self.pk)
# You may want to clear out the old dict first or perform a selective merge
self.__dict__.update(new_self.__dict__)
# Use it like this
bar.foo = foo
assert bar.foo.pk is None
foo.save()
foo.reload()
assert bar.foo is foo and bar.foo.pk is not None
...
Eclipse java debugging: source not found
...issing source will continue to show "missing source".
Edit Source Lookup
Select the Edit Source Lookup... command [ Edit Source Lookup ] to open the Source Path Dialog, which allows you to make changes to the source lookup path of the selected debug target.
IMPORTANT Restart Eclipse after t...
How do I open the SearchView programmatically?
...
This is the correct solution - The selected one forces you to set showAsAction: always which causes some issues.
– Ixx
Apr 30 '18 at 8:24
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Reverting part of a commit with git
... for reverting whole commits. You can use git checkout -p to interactively select bits to revert.
– mipadi
Mar 31 '17 at 18:52
1
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The identity used to sign the executable is no longer valid
... to Preferences --> Accounts --> View Details
Press the + symbol and select iOS Development
Press the refresh button in the lower left corner (called Download all in Xcode 7)
PS:
Sometimes it may also help to delete invalid provisioning profiles: right-click -> move to trash
I saw this...
The developers of this app have not set up this app properly for Facebook Login?
.../developers.facebook.com/
Click on the Apps menu on the top bar.
Select the respective app from the drop down.
The circle next to your app name is not fully green. When you hover mouse on it, you'll see a popup saying, "Not available to all users because your app is not live."
So next...
Using LINQ to concatenate strings
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Real example from my code:
return selected.Select(query => query.Name).Aggregate((a, b) => a + ", " + b);
A query is an object that has a Name property which is a string, and I want the names of all the queries on the selected list, separated by comma...
What's the difference between @JoinColumn and mappedBy when using a JPA @OneToMany association
... symmetry in many-to-many relationships and Hibernate has no rationale for selecting one direction over the other.
We therefore use MappedBy to tell Hibernate, we have chosen the other entity to dictate the mapping of the relationship between the two entities.
@Entity
public class Driver {
@Ma...
Not showing placeholder for input type=“date” field
...format while the input is focused (for people who type the date instead of selecting)
– Marco somefox
Apr 30 at 14:05
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R: Comment out block of code [duplicate]
...tors use something like command or control and single quote to comment out selected lines of code. In RStudio it's Command or Control+/. Check in your editor.
It's still commenting line by line, but they also uncomment selected lines as well. For the Mac RGUI it's command-option ' (I'm imagining...