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EF Code First “Invalid column name 'Discriminator'” but no inheritance

I have a table in my database called SEntries (see below the CREATE TABLE statement). It has a primary key, a couple of foreign keys and nothing special about it. I have many tables in my database similar to that one, but for some reason, this table ended up with a "Discriminator" column on the EF P...
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What are the benefits of Java's types erasure?

...about type erasure, which is the only thing Java got right, while ignoring all the things it got wrong. I get huge benefits (e.g. parametricity) and nil cost (alleged cost is a limit of imagination). new T is a broken program. It is isomorphic to the claim "all propositions are true." I am not big ...
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JavaScript equivalent of jQuery's extend method

...e default object. Each of those objects contains properties that essentially work as settings for the rest of the code within the function. In order to prevent having to specify all of the settings within the config object, I use jQuery's extend method to fill in a new object, settings wit...
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How to ignore files/directories in TFS for avoiding them to go to central source repository?

...orer to name it .nuget. for it to successfully save as .nuget (it automatically removes the last period) but directly trying to name it .nuget may not work (you may get an error or it may change the name, depending on your version of Windows). Or name the directory nuget, and open the parent directo...
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Check for array not empty: any?

..." value in the array evaluates to true. Similar methods to this are none?, all? and one?, where they all just check to see how many times true could be evaluated. which has nothing to do with the count of values found in a array. case 1 >> a = [] => [] >> a.any? => false >> a...
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What is a database transaction?

... you want to treat as "a whole." It has to either happen in full or not at all. A classical example is transferring money from one bank account to another. To do that you have first to withdraw the amount from the source account, and then deposit it to the destination account. The operation has to ...
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Convert DOS line endings to Linux line endings in Vim

If I open files I created in Windows, the lines all end with ^M . How do I delete these characters all at once? 26 Answers...
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Split string into an array in Bash

...;<< "$string" Note that the characters in $IFS are treated individually as separators so that in this case fields may be separated by either a comma or a space rather than the sequence of the two characters. Interestingly though, empty fields aren't created when comma-space appears in the in...
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Dependency injection through constructors or property setters?

...more for unit tests, so now I am playing the game of going around altering all the constructors to match, and it's taking ages. It makes me think that using properties with setters is a better way of getting dependencies. I don't think injected dependencies should be part of the interface to const...
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C/C++ include header file order

...chnicus: header is "self-contained"). And the rest just seems to flow logically from there. share | improve this answer | follow | ...