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Is background-color:none valid CSS?
...nswered Jan 5 '12 at 8:42
James AllardiceJames Allardice
152k2121 gold badges309309 silver badges301301 bronze badges
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What is the difference between user variables and system variables?
...eating the environment for an application. System variables are shared for all users, but user variables are only for your account/profile.
If you deleted the system ones by accident, bring up the Registry Editor, then go to HKLM\ControlSet002\Control\Session Manager\Environment (assuming your curr...
Linux/Unix command to determine if process is running?
...s arg vector. Any such approach is doomed to fail sooner or later (you actually admit to that yourself, by saying that more checks are needed). I've added my own recommendation in a separate answer.
– peterh
Oct 3 '13 at 10:41
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What's the difference between 'git merge' and 'git rebase'?
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Suppose originally there were 3 commits, A,B,C:
Then developer Dan created commit D, and developer Ed created commit E:
Obviously, this conflict should be resolved somehow. For this, there are 2 ways:
MERGE:
Both commits D and E ...
Java Naming Convention with Acronyms [closed]
...tion is not always followed in Java. Four character acronyms do seem to usually use mixed case, but even the JCL is not consistent about three letter acronyms. Most of them seem to be all uppercase, like 'URL', 'XML', 'SQL', and 'DOM', but there are some exceptions like 'Jar'.
Conclusion
For Java:...
Return Boolean Value on SQL Select Statement
...
What you have there will return no row at all if the user doesn't exist. Here's what you need:
SELECT CASE WHEN EXISTS (
SELECT *
FROM [User]
WHERE UserID = 20070022
)
THEN CAST(1 AS BIT)
ELSE CAST(0 AS BIT) END
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How to view AndroidManifest.xml from APK file?
...droid apps
How to do this on your Windows System:
Download apktool-install-windows-* file
Download apktool-* file
Unpack both to your Windows directory
Now copy the APK file also in that directory and run the following command in your command prompt:
apktool d HelloWorld.apk ./HelloWorld
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Haskell offline documentation?
...
Hoogle is available offline, installable from Cabal: http://hackage.haskell.org/package/hoogle
Usage instructions are at http://www.haskell.org/haskellwiki/Hoogle#Command_Line_Search_Flags.
Usage:
$ hoogle --help
Hoogle v4.2.8, (C) Neil Mitchell 2004-2011...
Store images in a MongoDB database
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GridFS is for documents > 16MB. Not all binary data is this large. Other than being able to surpass that limit, is there any other benefits to using GridFS instead of just the BinData type?
– Brandon Fitzpatrick
Jan 29 '1...
When to use virtual destructors?
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Virtual destructors are useful when you might potentially delete an instance of a derived class through a pointer to base class:
class Base
{
// some virtual methods
};
class Derived : public Base
{
~Derived()
{
// Do some important cleanup
}
};
Her...