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What's the difference between a catalog and a schema in a relational database?
...ns of schemas in an SQL-environment. An
SQL-environment contains zero or more catalogs. A catalog contains
one or more schemas, but always contains a schema named
INFORMATION_SCHEMA that contains the views and domains of the
Information Schema.
Database Language SQL, (Proposed revised text...
Scanner vs. BufferedReader
...uffer (1024 chars) as opposed to the BufferedReader (8192 chars), but it's more than sufficient.
As to the choice, use the Scanner if you want to parse the file, use the BufferedReader if you want to read the file line by line. Also see the introductory text of their aforelinked API documentations....
Method Resolution Order (MRO) in new-style classes?
... for legacy vs new-style classes comes when the same ancestor class occurs more than once in the "naive", depth-first approach -- e.g., consider a "diamond inheritance" case:
>>> class A: x = 'a'
...
>>> class B(A): pass
...
>>> class C(A): x = 'c'
...
>>> cla...
Failed to serialize the response in Web API with Json
...recommend not passing back entities that come from a database. It is much more reliable and maintainable to use Models in which you have control of what the data looks like and not the database. That way you don't have to mess around with the formatters so much in the WebApiConfig. You can just c...
Set title background color
...ry to get some of the knowledge from the link onto this page. You will get more and more knowledge in the community, and even if the link is down you answer still provides some search terms that can direct other people in the direction.
– Janusz
Mar 5 '10 at 13...
C#: Printing all properties of an object [duplicate]
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Force R not to use exponential notation (e.g. e+10)?
...ntific
notation: fixed notation will be preferred unless it is more
than ‘scipen’ digits wider.
Example:
R> ran2 <- c(1.810032e+09, 4)
R> options("scipen"=-100, "digits"=4)
R> ran2
[1] 1.81e+09 4.00e+00
R> options("scipen"=100, "digits"=4)
R> ran2
[1...
What is the difference between google tag manager and google analytics?
...d when your tags fire. It can fire almost any analytics tag, and much much more. In fact, you could use it to insert pretty much any code onto your website at the push of a button.
So you see, Google Tag Manager inserts custom HTML into your site, including analytics tags. These take the data from ...
How can I make a jQuery UI 'draggable()' div draggable for touchscreen?
...
Caution: This answer was written in 2010 and technology moves fast. For a more recent solution, see @ctrl-alt-dileep's answer below.
Depending on your needs, you may wish to try the jQuery touch plugin; you can try an example here. It works fine to drag on my iPhone, whereas jQuery UI Draggable ...
Create a custom callback in JavaScript
...t properly, but it's just worth pointing out because it's a common error.
More advanced stuff
Sometimes you want to call the callback so it sees a specific value for this. You can easily do that with the JavaScript call function:
function Thing(name) {
this.name = name;
}
Thing.prototype.doSo...