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How to design a database for User Defined Fields?

...rformance is the primary concern, I would go with #6... a table per UDF (really, this is a variant of #2). This answer is specifically tailored to this situation and the description of the data distribution and access patterns described. Pros: Because you indicate that some UDFs have values for a...
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Algorithms based on number base systems? [closed]

...ctional Data Structures that discusses "Numerical Representations": essentially, take some representation of a number and convert it into a data structure. To give a flavor, here are the sections of that chapter: Positional Number Systems Binary Numbers (Binary Random-Access Lists, Zeroless Repres...
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How to preventDefault on anchor tags?

...fault(); }); } } }; }); It checks all anchor tags (<a></a>) to see if their href attribute is either an empty string ("") or a hash ('#') or there is an ng-click assignment. If it finds any of these conditions, it catches the event and prevents t...
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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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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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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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What's default HTML/CSS link color?

...ect them to work. But keep in mind that a browser is free to ignore any or all of these guidelines, as it is never required to follow them. It is, however, recommended for a consistent user experience across browsers (which is how "expected" is defined in this context), so chances are that these col...
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When should I use RequestFactory vs GWT-RPC?

I am trying to figure out if I should migrate my gwt-rpc calls to the new GWT2.1 RequestFactory cals. 8 Answers ...
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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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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 ...