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What's the difference between RANK() and DENSE_RANK() functions in oracle?
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with q as (
select 10 deptno, 'rrr' empname, 10000.00 sal from dual union all
select 11, 'nnn', 20000.00 from dual union all
select 11, 'mmm', 5000.00 from dual union all
select 12, 'kkk', 30000 from dual union all
select 10, 'fff', 40000 from dual union all
select 10, 'ddd', 40000 from dual union ...
How to filter None's out of List[Option]?
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someList.filter(_.isDefined) if you want to keep the result type as List[Option[A]]
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Auto code completion on Eclipse
I want Eclipse to automatically suggest to me all possible options, while I'm writing some variable/class name or keyword, like in Flash Develop or Visual Studio.
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How do I remove all non alphanumeric characters from a string except dash?
How do I remove all non alphanumeric characters from a string except dash and space characters?
13 Answers
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How to handle multiple heterogeneous inputs with Logstash?
...gist.github.com/fairchild/3030472 Per documentation: Add a 'type' field to all events handled by this input. Types are used mainly for filter activation. The type is stored as part of the event itself, so you can also use the type to search for it in the web interface.
– Tony...
Different return values the first and second time with Moq
...ou can setup a sequence of events using SetupSequence. Here's an example:
_mockClient.SetupSequence(m => m.Connect(It.IsAny<String>(), It.IsAny<int>(), It.IsAny<int>()))
.Throws(new SocketException())
.Throws(new SocketException())
.Returns(true)
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Moving average or running mean
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UPD: more efficient solutions have been proposed by Alleo and jasaarim.
You can use np.convolve for that:
np.convolve(x, np.ones((N,))/N, mode='valid')
Explanation
The running mean is a case of the mathematical operation of convolution. For the running mean, you slide...
Generate list of all possible permutations of a string
How would I go about generating a list of all possible permutations of a string between x and y characters in length, containing a variable list of characters.
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Hidden Features of VB.NET?
... It looks like someone could still create their own rule by calling the Rule constructor directly? If so, and if you wanted to stop this, could you declare the constructor as "Friend" in your library?
– Joel Coehoorn
Oct 7 '08 at 14:40
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Check if object value exists within a Javascript array of objects and if not add a new object to arr
...his is what I did in addition to @sagar-gavhane's answer
const newUser = {_id: 4, name: 'Adam'}
const users = [{_id: 1, name: 'Fred'}, {_id: 2, name: 'Ted'}, {_id: 3, 'Bill'}]
const userExists = users.some(user => user.name = newUser.name);
if(userExists) {
return new Error({error:'User exi...