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What is a regular expression which will match a valid domain name without a subdomain?
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Well, it's pretty straightforward a little sneakier than it looks (see comments), given your specific requirements:
/^[a-zA-Z0-9][a-zA-Z0-9-]{1,61}[a-zA-Z0-9]\.[a-zA-Z]{2,}$/
But note this will reject a lot of valid domains.
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What is “callback hell” and how and why does RX solve it?
Can someone give a clear definition together with a simple example that explains what is a "callback hell" for someone who does not know JavaScript and node.js ?
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EditText, clear focus on touch outside
My layout contains ListView , SurfaceView and EditText . When I click on the EditText , it receives focus and the on-screen keyboard pops up. When I click somewhere outside of the EditText , it still has the focus (it shouldn't).
I guess I could set up OnTouchListener 's on the other views in...
Difference between float and decimal data type
What difference does it make when I use float and decimal data types in MySQL?.
12 Answers
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How do I sort a Set to a List in Java?
In Java, I have a Set , and I want to turn it into a sorted List . Is there a method in the java.util.Collections package that will do this for me?
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Override back button to act like home button
...e a Service to perform something in the background, and your visible Activity simply controls this Service. (I'm sure the Music player works in the same way, so the example in the docs seems a bit misleading.) If that's the case, then your Activity can finish as usual and the Service will still be ...
What does the red exclamation point icon in Eclipse mean?
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"Problems" view shows nothing in the case of it being an SVN fault. Try deleting the .svn folder from the offending folder and refreshing if that happens.
– iono
Jul 19 '12 at 8:00
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Swift compiler segmentation fault when building
...Meal!.State == .Deleted){
}
so I think optional not unwrapped in if condition can cause this error
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Find Oracle JDBC driver in Maven repository
...c driver to my project as dependency (runtime scope) - ojdbc14.
In MVNrepository site the dependency to put in the POM is:
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Looping through the content of a file in Bash
How do I iterate through each line of a text file with Bash ?
13 Answers
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