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Convert Time from one time zone to another in Rails
...
or you can just use hour ident now.in_time_zone(3)
– fl00r
Mar 24 '11 at 13:00
8
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C#: Abstract classes need to implement interfaces?
...ly define those members with the abstract keyword:
interface IFoo
{
void Bar();
}
abstract class Foo : IFoo
{
public abstract void Bar();
}
Or to put it another way: you don't have to "implement" it (which would be a terrible limitation on abstract classes); however, in C#, you do have t...
php execute a background process
...f("%s > %s 2>&1 & echo $! >> %s", $cmd, $outputfile, $pidfile));
This launches the command $cmd, redirects the command output to $outputfile, and writes the process id to $pidfile.
That lets you easily monitor what the process is doing and if it's still running.
function isRu...
Java: Difference between the setPreferredSize() and setSize() methods in components
...d be on top-level components (JFrames and JWindows) and things that are inside of scrolled panes. You also must call setSize() if you've got components inside a parent without a layout manager.
Generally, setPreferredSize() will lay out the components as expected if a layout manager is present; mos...
Are GUID collisions possible?
I'm working on a database in SQL Server 2000 that uses a GUID for each user that uses the app it's tied to. Somehow, two users ended up with the same GUID. I know that microsoft uses an algorithm to generate a random GUID that has an extremely low chance of causing collisons, but is a collision stil...
git add remote branch
...local branch or vice versa, so I've outlined both scenarios as well as provided information on merging the remote and local branches.
Creating a remote called "github":
git remote add github git://github.com/jdoe/coolapp.git
git fetch github
List all remote branches:
git branch -r
github/gh-p...
How to join absolute and relative urls?
... Good way to support a list of values. You can remove your side effect (your "base" variable) by using a reduce though. reduce(lambda a, b: urlparse.urljoin(a, b), es) A map is list[n] - to -> list[n] A reduce is list[n] - to -> a calculated value
– Peter ...
Ruby: Merging variables in to a string
...
The idiomatic way is to write something like this:
"The #{animal} #{action} the #{second_animal}"
Note the double quotes (") surrounding the string: this is the trigger for Ruby to use its built-in placeholder substitution. Yo...
How can I set Image source with base64
...
Try using setAttribute instead:
document.getElementById('img')
.setAttribute(
'src', 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=='
);
Real answer:
(And make sure you...
How to fix the aspect ratio in ggplot?
...tio=1).
Andrie's answer doesn't give the full picture, as the example provides perhaps unnatural data where range of x equals the range of y. If however the data were:
df <- data.frame(
x = runif(100, 0, 50),
y = runif(100, 0, 5))
ggplot(df, aes(x=x, y=y)) + geom_point() + coord_fixed()
t...