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Get notified when UITableView has finished asking for data?
...le of days and think that subclassing UITableView's reloadData is the best approach :
- (void)reloadData {
NSLog(@"BEGIN reloadData");
[super reloadData];
NSLog(@"END reloadData");
}
reloadData doesn't end before the table has finish reload its data. So, when the second NSLog is f...
How to detect online/offline event cross-browser?
...cable.
Mozilla Firefox (before version 41), Opera, and IE take a different approach, and consider you "online" unless you explicitly pick "Offline Mode" in the browser - even if you don't have a working network connection.
There are valid arguments for the Firefox/Mozilla behavior, which are outline...
Recover from git reset --hard?
...AD@{5}: commit: restore admin
ecd2c1d HEAD@{6}: commit: re-enable settings app
# the commit the HEAD to be pointed to is 7c49ec7 (restore dependencies to the User model)
$ git reset HEAD@{2}
You got your day back! :)
shar...
Error 'LINK : fatal error LNK1123: failure during conversion to COFF: file invalid or corrupt' after
I've installed Visual Studio 2012 Release Preview, and it appears to be fine, but now when I try to use Visual Studio 2010 to compile C++ projects, I get the following error message:
...
How to install a gem or update RubyGems if it fails with a permissions error
... have permission to write there.
That is the version of Ruby installed by Apple, for their own use. While it's OK to make minor modifications to that if you know what you're doing, because you are not sure about the permissions problem, I'd say it's not a good idea to continue along that track.
In...
When do you use varargs in Java?
...ting to the logs for purposes of debugging.
Pretty much every class in my app has a method debugPrint():
private void debugPrint(Object... msg) {
for (Object item : msg) System.out.print(item);
System.out.println();
}
Then, within methods of the class, I have calls like the following:
d...
How can I make the cursor turn to the wait cursor?
I have a C# application that has users login to it, and because the hashing algorithm is expensive, it takes a little while to do. How can I display the Wait/Busy Cursor (usually the hourglass) to the user to let them know the program is doing something?
...
HTTP 1.0 vs 1.1
...officially require a Host header, but it doesn't hurt to add one, and many applications (proxies) expect to see the Host header regardless of the protocol version.
Example:
GET / HTTP/1.1
Host: www.blahblahblahblah.com
This header is useful because it allows you to route a message through proxy ...
My Git repository is in the wrong root directory. Can I move it? (../ instead of ./)
...
the answer below is a much better approach since it retains all the history
– BigMikeW
Jul 5 '17 at 1:16
2
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Validation failed for one or more entities. See 'EntityValidationErrors' property for more details [
I am having this error when seeding my database with code first approach.
29 Answers
2...