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Delete everything in a MongoDB database
I'm doing development on MongoDB. For totally non-evil purposes, I sometimes want to blow away everything in a database—that is, to delete every single collection, and whatever else might be lying around, and start from scratch. Is there a single line of code that will let me do this? Bonus points...
Xcode Command /usr/bin/codesign failed with exit code 1 : errSecInternalComponent
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Open Keychain Access, then in the File menu select Lock All Keychains.
Then go back to Xcode and clean and rebuild. It will prompt you for your password again to unlock the keychain.
After this, assuming you have no other compile issues, it will succeed!
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Disable Automatic Reference Counting for Some Files
... clear on this point, seem to suggest that as long as each class is either all ARC or all manually-managed, the classes can be integrated into a single program.
You only can't mix ARC and non-ARC in a single class; the document says that sending retain, release, autorelease, or retainCount messages...
How do I write a bash script to restart a process if it dies?
...crashing on your hands. The sleep 1 takes away the strain from that.
Now all you need to do is start this bash script (asynchronously, probably), and it will monitor myserver and restart it as necessary. If you want to start the monitor on boot (making the server "survive" reboots), you can sched...
linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...e.log
visible_hostname 192.168.16.1
cache_mgr lindenstar@163.com
acl all src 0.0.0.0/0.0.0.0
http_access allow all
2.2 acl选项的格式如下：
acl列表名称 列表类型 [-i] 列表值
列表名称：用于区分Squid的各个访问控制列表，任何两个访问控制列表不...
SSH Private Key Permissions using Git GUI or ssh-keygen are too open
...ssh folder and files to.
If that doesn't work, I would try doing an uninstall of msysgit, deleting ALL .ssh folders on the computer (just for safe measure), then reinstalling msysgit with your desired settings and try starting over completely (though I think you told me you tried this already).
Ed...
What's the difference between a web site and a web application? [closed]
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This is totally personal and subjective, but I'd say that a website is defined by its content, while a web application is defined by its interaction with the user. That is, a website can plausibly consist of a static content repository ...
What's the fastest way to merge/join data.frames in R?
...(y) from main.d group by g1, g2"))
)
The outputs from the two benchmark call comparing the merge calculations are:
Joining by: x
test replications elapsed relative user.self sys.self user.child sys.child
3 data.table 1 0.34 1.000000 0.31 0.01 NA NA
2 ...
Same Navigation Drawer in different Activities
...Config);
drawerToggle.onConfigurationChanged(newConfig);
}
}
All the other Activities that needs to have a navigation drawer should extend this Activity instead of Activity itself, example:
public class AnyActivity extends BaseActivity
{
//Because this activity extends BaseActivit...
How to execute a function when page has fully loaded?
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That's called load. It came waaaaay before DOM ready was around, and DOM ready was actually created for the exact reason that load waited on images.
window.addEventListener('load', function () {
alert("It's loaded!")
})
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