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PowerShell says “execution of scripts is disabled on this system.”

... If you're using Windows Server 2008 R2 then there is an x64 and x86 version of PowerShell both of which have to have their execution policies set. Did you set the execution policy on both hosts? As an Administrator, you can set the execution policy by typing this into your PowerShell...
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Round to 5 (or other number) in Python

... I don't know of a standard function in Python, but this works for me: Python 2 def myround(x, base=5): return int(base * round(float(x)/base)) Python3 def myround(x, base=5): return base * round(x/base) It is easy to see why the a...
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Update Item to Revision vs Revert to Revision

I've started to use Subversion with TortoiseSVN. If I open up the log and right click on an old revision I see two options that sound like they roll back to an older version: "Update item to revision" and "Revert to this revision". ...
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What are the options for storing hierarchical data in a relational database? [closed]

...in this thread suggested. Use an Adjacency List to maintain the hierarchy and use Nested Sets to query the hierarchy. The problem up until now has been that the coversion method from an Adjacecy List to Nested Sets has been frightfully slow because most people use the extreme RBAR method known as ...
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How to show all privileges from a user in oracle?

...RIVS; SELECT * FROM USER_TAB_PRIVS; SELECT * FROM USER_ROLE_PRIVS; DBAs and other power users can find the privileges granted to other users with the DBA_ versions of these same views. They are covered in the documentation . Those views only show the privileges granted directly to the user. Fi...
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@Resource vs @Autowired

...-3.0 it doesn't matter which one. In spring 3.0 there's support for the standard (JSR-330) annotation @javax.inject.Inject - use it, with a combination of @Qualifier. Note that spring now also supports the @javax.inject.Qualifier meta-annotation: @Qualifier @Retention(RUNTIME) public @interface Yo...
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Virtualbox “port forward” from Guest to Host [closed]

... Network communication Host -> Guest Connect to the Guest and find out the ip address: ifconfig example of result (ip address is 10.0.2.15): eth0 Link encap:Ethernet HWaddr 08:00:27:AE:36:99 inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0 Go to Vbox inst...
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How to turn on/off ReactJS 'development mode'?

...he other answer assumes you are using external pre-built files from react, and while correct that is not how most folks are going to or should consume React as a package. Moreover, at this point most every React library and package also relies on the same convention to toggle dev time helpers off du...
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Is bool a native C type?

...kernel code uses bool, but I thought that bool was a C++ type. Is bool a standard C extension (e.g., ISO C90) or a GCC extension? ...
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What is the purpose of mock objects?

I am new to unit testing, and I continously hear the words 'mock objects' thrown around a lot. In layman's terms, can someone explain what mock objects are, and what they are typically used for when writing unit tests? ...