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How to get the last N records in mongodb?
...e that to order by ...
db.foo.find().sort({_id:1});
That will return back all your documents sorted from oldest to newest.
Natural Order
You can also use a Natural Order mentioned above ...
db.foo.find().sort({$natural:1});
Again, using 1 or -1 depending on the order you want.
Use .limit(...
How to get result of console.trace() as string in javascript with chrome or firefox?
... v8/chrome you can use a method on the Error constructor called captureStackTrace. (More info here)
So a hacky way to get it would be:
var getStackTrace = function() {
var obj = {};
Error.captureStackTrace(obj, getStackTrace);
return obj.stack;
};
console.log(getStackTrace());
Normally, g...
PHP server on local machine?
... answered Nov 5 '09 at 2:52
LukmanLukman
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What to return if Spring MVC controller method doesn't return value?
I am using jQuery's $.getJSON() to make asynchronous calls to my simple Spring MVC backend. Most of the Spring controller methods look like this:
...
How can I connect to Android with ADB over TCP? [closed]
...let in two ways:
Manual IP Discovery:
Go into Android's WiFi settings, click the menu button in the action bar (the vertical ellipsis), hit Advanced and see the IP address at the bottom of the screen.
Use ADB to discover IP:
Execute the following command via adb:
adb shell ip -f inet addr show wlan0...
How can I run a function from a script in command line?
...
Sven MarnachSven Marnach
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What is meaning of boolean value returned from an event-handling method in Android
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adampadamp
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Opening a folder in explorer and selecting a file
...ed Dec 2 '08 at 16:46
Tomasz SmykowskiTomasz Smykowski
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Validating parameters to a Bash script
...lder
~/myfolder3/$1/thisisafolder
EOF
edit: I missed the part about checking if the directories exist at first, so I added that in, completing the script. Also, have addressed issues raised in comments; fixed the regular expression, switched from == to eq.
This should be a portable, POSIX compli...
Hibernate throws org.hibernate.AnnotationException: No identifier specified for entity: com..domain.
... field annotated with @Id. Each @Entity needs an @Id - this is the primary key in the database.
If you don't want your entity to be persisted in a separate table, but rather be a part of other entities, you can use @Embeddable instead of @Entity.
If you want simply a data transfer object to hold ...