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What is a race condition?
... What does the other thread do when it encounters the lock? Does it wait? Error?
– Brian Ortiz
Oct 19 '09 at 1:58
182
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ASP.Net MVC Html.HiddenFor with wrong value
...rd that shows different parts of a larger model at every step.
Data and/or Errors from "Step 1" would become mixed up with "Step 2", etc, until I finally realized that ModelState was to 'blame'.
This was my simple solution:
if (oldPageIndex != newPageIndex)
{
ModelState.Clear(); // <-- sol...
Automatic text translation at MSDN pages - How to turn off?
...xact same problem here. Plus, the German MSDN translation has all kinds of errors in it that can turn around the meaning of the text completely. A Firefox add-on like this sounds good.
– ygoe
Jun 27 '14 at 14:16
...
Using member variable in lambda capture list inside a member function
...had the standard handy, but currently I don't.
Now, it's exactly like the error message says: You can't capture stuff outside of the enclosing scope of the lambda.† grid is not in the enclosing scope, but this is (every access to grid actually happens as this->grid in member functions). For yo...
Reload Flask app when template file changes
...
If anyone encounters an error that says No such file or directory, try using the relative path as in : extra_dirs = ['./directory/to/watch',]
– Kevin
Jul 15 '15 at 5:44
...
Using an SSH keyfile with Fabric
...
Very useful! If you run into errors like IOError: [Errno 2] No such file or directory: ' /path/to/.ssh/key' or Login password for ' root': just make sure you have no whitespaces in your .ssh/config. It's for example User=root instead of User = root...
...
Abstract functions in Swift Language
...
or fatalError("This method must be overridden")
– nathan
Jun 8 '14 at 20:20
5
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Running a Python script from PHP
...string.
It returns the output from the executed command or NULL if an error
occurred or the command produces no output.
<?php
$command = escapeshellcmd('/usr/custom/test.py');
$output = shell_exec($command);
echo $output;
?>
In Python file test.py, verify this text in first line:...
Check if SQL Connection is Open or Closed
...
@user613326 actually, it wouldn't. There is no error handling in the example code, so any problems while connecting will simply throw and leave you to handle the exception. The returned value is therefore correct.
– Tom Lint
Aug 6 at...
Ask for User Permission to Receive UILocalNotifications in iOS 8
...starting from iOS7. So, when I run this code on an iOS7 device, I get this error: dyld: Symbol not found: _OBJC_CLASS_$_UIUserNotificationSettings. Is there any other way in Swift to ask user for permissions in order to work in iOS7? please help.
– Raghavendra
...