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List All Redis Databases
...mand to know the number of databases:
CONFIG GET databases
1) "databases"
2) "16"
You can use the following command to list the databases for which some keys are defined:
INFO keyspace
# Keyspace
db0:keys=10,expires=0
db1:keys=1,expires=0
db3:keys=1,expires=0
Please note that you are supposed ...
How can I generate random alphanumeric strings?
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How to convert SSH keypairs generated using PuTTYgen (Windows) into key-pairs used by ssh-agent and
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puttygen supports exporting your private key to an OpenSSH compatible format. You can then use...
Dependency graph of Visual Studio projects
I'm currently migrating a big solution (~70 projects) from VS 2005 + .NET 2.0 to VS 2008 + .NET 3.5. Currently I have VS 2008 + .NET 2.0.
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Exact time measurement for performance testing [duplicate]
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edited Mar 24 '13 at 11:05
Ivaylo Strandjev
62.1k1313 gold badges104104 silver badges159159 bronze badges
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How to watch for array changes?
...to change array content. We probably need something more comprehensive...
2. Create a custom observable array
Rather than overriding methods, you could create your own observable array. This particular implementation copies an array into a new array-like object and provides custom push(), pop(), s...
How can I make a div stick to the top of the screen once it's been scrolled to?
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21 Answers
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Is it possible to focus on a using JavaScript focus() function?
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window.location.hash = '#tries';
This will scroll to the element in question, essentially "foc...
How can I use Timer (formerly NSTimer) in Swift?
...lector: #selector(self.update), userInfo: nil, repeats: true)
// Swift 2.2 selector syntax
let timer = NSTimer.scheduledTimerWithTimeInterval(0.4, target: self, selector: #selector(MyClass.update), userInfo: nil, repeats: true)
// Swift <2.2 selector syntax
let timer = NSTimer.sch...
Attach parameter to button.addTarget action in Swift
...ed:",
forControlEvents: UIControlEvents.TouchUpInside)
Or for Swift 2.2 and greater:
button.tag = 5
button.addTarget(self,action:#selector(buttonClicked),
forControlEvents:.TouchUpInside)
Now do logic based on tag property
@objc func buttonClicked(sender:UIButton)
{
if(sender.tag ...