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not:first-child selector
... the versions you posted actually works for all modern browsers (where CSS selectors level 3 are supported):
div ul:not(:first-child) {
background-color: #900;
}
If you need to support legacy browsers, or if you are hindered by the :not selector's limitation (it only accepts a simple selector...
Most common C# bitwise operations on enums
...g)(ulong)flags : Convert.ToInt64(flags)) & (1L << bit)) != 0)
.Select(bit => Enum.ToObject(flags.GetType(), 1L << bit))`
Enums.NET flags.GetFlags()
I'm trying to get these improvements incorporated into .NET Core and maybe eventually the full .NET Framework. You can check o...
Is it possible to ping a server from Javascript?
... You need to ping the servers concurrently. You can achieve that with select, threads or processes. For really hardcore solution you could use Eventmachine.
– Epeli
Nov 26 '10 at 2:59
...
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo
...ncy component correctly. For example, on Android Studio (or Intellij IDEA) select the correct scope for the dependencies (Provided, Compile, ...). In my case, change Provided to Compile and works fine.
– dayanruben
Jan 21 '15 at 13:24
...
SQLite table constraint - unique on multiple columns
...Some other title');
sqlite> .mode col
sqlite> .headers on
sqlite> select * from t1;
id a b
---------- ---------- ----------------
1 Alice Some other title
2 Bob Palindromic guy
3 Charles chucky cheese
sq...
How do I get the entity that represents the current user in Symfony2?
...regular dql like
$em = $this->get('doctrine.orm.entity_manager');
"SELECT u FROM Acme\AuctionBundle\Entity\User u where u.username=".$username;
$q=$em->createQuery($query);
$user=$q->getResult();
the $user should now hold the user with this username ( you could also use other fields ...
How do I include a file over 2 directories back?
...
.. selects the parent directory from the current. Of course, this can be chained:
../../index.php
This would be two directories up.
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How to check if a value exists in an array in Ruby
... match.
Don't use these:
# bad examples
array.grep(element).any?
array.select { |each| each == element }.size > 0
...
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gem install: Failed to build gem native extension (can't find header files)
...t installed properly.
Below is the command to get rid of the issue.
xcode-select --install
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Unable to execute dex: Multiple dex files define Lcom/myapp/R$array;
...as OK with Ant).
This is how I fixed it:
Right click on the Project Name
Select Build Path -> Configure Build Path
In Java Build Path, go to the tab Order and Export
Uncheck your .jar library
Only sometimes:
In Order and Export tab I did not have any jar library there, so I have unchecked And...