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Why use a prime number in hashCode?
...puts is random and evenly spread, then the choice of the hash code/modulus does not matter. It only has an impact when there is a certain pattern to the inputs.
This is often the case when dealing with memory locations. For example, all 32-bit integers are aligned to addresses divisible by 4. Check...
What is the difference between “Class.forName()” and “Class.forName().newInstance()”?
...e method Class.forName. This explicitly loads
the driver class. Since it does not
depend on any external setup, this way
of loading a driver is the recommended
one for using the DriverManager
framework. The following code loads
the class acme.db.Driver:
Class.forName("acme.db.Driver");
...
PHP + MySQL transactions examples
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it can easily be modified to catch PDOException and even check exception values if needed. us2.php.net/PDOException
– Yamiko
Nov 13 '13 at 22:55
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How to redirect from OnActionExecuting in Base Controller?
I have tried two ways: Response.Redirect() which does nothing, as well as calling a new method inside of the Base Controller that returns an ActionResult and have it return RedirectToAction()... neither of these work.
...
How to check iOS version?
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iOS 3.2 does not appear to send -viewWillAppear in a UISplitViewController. My hack is to determine if < iOS 4.0, and send it to the Detail View Controller myself in the Root View's -didSelectRowAtIndexPath.
–...
How do I return rows with a specific value first?
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@chaos: the above statement does indeed not run with SQL Server, but that's because the syntax is non-standard and only works for MySQL. When using a CASE statement (which is standard SQL) SQL Server can very well use an expression in the ORDER BY claus...
How can I have linked dependencies in a git repo?
...e you're putting it first.
After you add a submodule, or whenever someone does a fresh checkout of your repository, you'll need to do:
git submodule init
git submodule update
And then all submodules you've added will be checked out at the same revision you have.
When you want to update to a new...
Force add despite the .gitignore file
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Uhm that doesn't work, on git status the file is still not shown
– Mark
Nov 5 '11 at 5:36
5
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How to change owner of PostgreSql database?
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@mArtinko5MB: That's impossible, ALTER doesn't DROP a database.
– Frank Heikens
Oct 18 '13 at 14:37
17
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What is (functional) reactive programming?
...So I don't describe FRP in representation/implementation terms as Thomas K does in another answer (graphs, nodes, edges, firing, execution, etc).
There are many possible implementation styles, but no implementation says what FRP is.
I do resonate with Laurence G's simple description that FRP is abo...