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“new” keyword in Scala
...or:
class Foo { }
val f = new Foo
Omit new if you are referring to the companion object's apply method:
class Foo { }
object Foo {
def apply() = new Foo
}
// Both of these are legal
val f = Foo()
val f2 = new Foo
If you've made a case class:
case class Foo()
Scala secretly creates a c...
In Vim, how do I apply a macro to a set of lines?
...
Use the normal command in Ex mode to execute the macro on multiple/all lines:
Execute the macro stored in register a on lines 5 through 10.
:5,10norm! @a
Execute the macro stored in register a on lines 5 through the end of the file.
:5...
Button in a column, getting the row from which it came on the Click event handler
...
The ideal way to do this kind of stuff is using commands (Basically MVVM pattern) you can create a command in your Data Object(ViewModel) and call Button.Command , So that there wont be any code behind like Button click.
– Jobi Joy
Ju...
How to access accelerometer/gyroscope data from Javascript?
I have recently come across a few websites that seems to access the accelerometer or gyroscope on my laptop, detecting changes in orientation or movement.
...
Browse orphaned commits in Git
...o my own question. Using git reflog --all is a good way to browse orphaned commits - and using the SHA1 hashes from that you can reconstruct history.
In my case though, the repository was corrupted so this didn't help; git fsck can help you find and sometimes fix errors in the repository itself.
...
How big is too big for a PostgreSQL table?
I'm working on the design for a RoR project for my company, and our development team has already run into a bit of a debate about the design, specifically the database.
...
Can I set a breakpoint on 'memory access' in GDB?
...point 2: *0xfeedface
but one limitation applies to the rwatch and awatch commands; you can't use gdb variables
in expressions:
gdb$ rwatch $ebx+0xec1a04f
Expression cannot be implemented with read/access watchpoint.
So you have to expand them yourself:
gdb$ print $ebx
$13 = 0x135700
gdb$ rwa...
Running a specific test case in Django when your app has a tests directory
The Django documentation ( http://docs.djangoproject.com/en/1.3/topics/testing/#running-tests ) says that you can run individual test cases by specifying them:
...
NerdTree - Reveal file in tree
... @MrA you can just only create the NERDTree with the NERDTreeFind command - is that enough?
– Thomas
Jun 23 '13 at 19:56
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