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Determining type of an object in ruby
I'll use python as an example of what I'm looking for (you can think of it as pseudocode if you don't know Python):
5 Answe...
How to change the remote repository for a git submodule?
I've created a git repository with a submodule in it. I'm able to tell the submodule itself to change its remote repository path, but I'm not sure how to tell the parent repository how to change the remote repository path for the submodule.
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Shortest way to print current year in a website
...s that have the copyright date hard coded in the footer. I want to replace it with some JavaScript that will automatically update each year.
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How to select last two characters of a string
I need to select last two characters from the variable, whether it is digit or letters.
9 Answers
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What does the `#` operator mean in Scala?
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To explain it, we first have to explain nested classes in Scala. Consider this simple example:
class A {
class B
def f(b: B) = println("Got my B!")
}
Now let's try something with it:
scala> val a1 = new A
a1: A = A@2fa8ecf4
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What exactly do the Vagrant commands do?
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I agree with you that documentation at vagrantup is on the shorter side.
Some information can be gleaned from command help system.
For example: gem command.
Just type the command without arguments: vagrant gem -h and it produces t...
How do I set the time zone of MySQL?
...at value they are set to:
SELECT @@global.time_zone;
To set a value for it use either one:
SET GLOBAL time_zone = '+8:00';
SET GLOBAL time_zone = 'Europe/Helsinki';
SET @@global.time_zone = '+00:00';
(Using named timezones like 'Europe/Helsinki' means that you have to have a timezone table pro...
Freeze screen in chrome debugger / DevTools panel for popover inspection?
I'm using the chrome inspector to try and analyze the z-index of a twitter bootstrap popover, and finding it extremely frustrating...
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How can I write a regex which matches non greedy? [duplicate]
I need help about regular expression matching with non-greedy option.
3 Answers
3
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Generate a random number in the range 1 - 10
...bers between 1 and 10 you mean any float that is >= 1 and < 10, then it's easy:
select random() * 9 + 1
This can be easily tested with:
# select min(i), max(i) from (
select random() * 9 + 1 as i from generate_series(1,1000000)
) q;
min | max
-----------------+------...