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...数据库的timeout时长，如：wait_timeout = 864000
mysql>set global wait_timeout=864000;
然后修改：vim /etc/my.cnf 重启一下服务 service mysqld restart
[mysqld]
wait_timeout = 864000
interactive_timeout = 864000
运行crontab，定期处理失...
How do you dynamically add elements to a ListView on Android?
...lic void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
adapter=new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
listItems);
setListAdapter(adapter);
}
//METHOD WHICH WILL HAND...
What's the difference between session.Merge and session.SaveOrUpdate?
...hat worked for me is the following:
In the mapping Myclass.hbm.xml file, set cascade="merge"
SaveOrUpdate the child/dependent object first before assigning it to the parent object.
SaveOrUpdate the parent object.
However, this solution has limitations. i.e., you have to take care of saving your ...
How do you rename a MongoDB database?
...ery single collection and index includes the database name, so to rename a set of database files, every single namespace string would have to be rewritten. This impacts:
the .ns file
every single numbered file for the collection
the namespace for every index
internal unique names of ea...
How can I scale the content of an iframe?
... -webkit-transform-origin: 0 0;
transform-origin: 0 0;
}
For IE8, set the width/height to match the iframe, and add -ms-zoom to the .wrap container div:
.wrap
{
width: 1280px; /* same size as frame */
height: 768px;
-ms-zoom: 0.25; /* for IE 8 ONLY */
}
Just use your favorite...
How can I stop .gitignore from appearing in the list of untracked files?
...f you're working on a team, shouldn't everyone should be ignoring the same set of files? That's why the .gitignore file gets added to the repository. No one says you have to deploy it as part of your project.
– Ryan Lundy
Sep 24 '11 at 23:02
...
What are the best practices for catching and re-throwing exceptions?
... around exceptions. The first is nested exceptions and the second is a new set of exception types offered by the SPL extension (which is now a core extension of the PHP runtime). Both of these new features have found their way into the book of best best practices and deserve to be examined in detail...
Remove characters after specific character in string, then remove substring?
...remove the items after a character, just change the +1 to a -1 and you are set!
But for a URL, I would use the built in .NET class to take of that.
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What's the difference(s) between .ToList(), .AsEnumerable(), AsQueryable()?
...). That is, both the length and the width, respectively, of the SQL result set are reduced.
Now suppose users only want to see the date part of CreateDate. In Entity Framework you'll quickly discover that...
.Select(x => new { x.Name, x.CreateDate.Date })
...is not supported (at the time of writ...
Check if a dialog is displayed with Espresso
...o use UIAutomator.
Include UIAutomator dependency in your build.gradle
// Set this dependency to build and run UI Automator tests
androidTestCompile 'com.android.support.test.uiautomator:uiautomator-v18:2.1.2'
and use
// Initialize UiDevice instance
UiDevice uiDevice = UiDevice.getInstance(In...