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What's Alternative to Singleton
We have a class that holds configuration information for the application. It used to be a singleton. After some architectural review, we were told to remove the singleton. We did see some benefits of not using singleton in the unit testing because we can test different configurations all at once.
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Does ruby have real multithreading?
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Updated with Jörg's Sept 2011 comment
You seem to be confusing two very different things here: the
Ruby Programming Language and the specific threading model of one
specific implementation of the Ruby Programming Language. There
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How to sort in mongoose?
I find no doc for the sort modifier. The only insight is in the unit tests:
spec.lib.query.js#L12
17 Answers
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Quickly reading very large tables as dataframes
...s a dataframes in R. read.table() has a lot of convenient features, but it seems like there is a lot of logic in the implementation that would slow things down. In my case, I am assuming I know the types of the columns ahead of time, the table does not contain any column headers or row names, an...
What are CN, OU, DC in an LDAP search?
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CN = Common Name
OU = Organizational Unit
DC = Domain Component
These are all parts of the X.500 Directory Specification, which defines nodes in a LDAP directory.
You can also read up on LDAP data Interchange Format (LDIF), which is an alternate format.
You re...
glob exclude pattern
I have a directory with a bunch of files inside: eee2314 , asd3442 ... and eph .
10 Answers
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Understanding implicit in Scala
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I'll explain the main use cases of implicits below, but for more detail see the relevant chapter of Programming in Scala.
Implicit parameters
The final parameter list on a method can be marked implicit, which means the values will be taken from the context in whic...
What is the difference between NTFS Junction Points and Symbolic Links?
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Symbolic links have more functionality, while junctions almost seem to be a legacy feature because of their limitations, but the security implications of these limitations are specifically why a junction might be preferred over a symbolic link. Remote targetin...
How to get the type of T from a member of a generic class or method?
...nd correctly, your list has the same type parameter as the container class itself. If this is the case, then:
Type typeParameterType = typeof(T);
If you are in the lucky situation of having object as a type parameter, see Marc's answer.
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How can I delete Docker's images?
...ker ps -a -q)
Warning: This will destroy all your images and containers. It will not be possible to restore them!
This solution is provided by Techoverflow.net.
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