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What do I have to do to get Core Data to automatically migrate models?

...oordinator: %@",error); } Then you need to do a little trick in xCode: Select your xcdatamodel file Select the Design Menu at the top - then Data Model - then choose Add Model Version Your xcdatamodel file will then get moved into a new directory with the same name as your xcdatamodel file but w...
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Oracle TNS names not showing when adding new connection to SQL Developer

... Restart SQL Developer Now in SQL Developer right click on Connections and select New Connection.... Select TNS as connection type in the drop down box. Your entries from tnsnames.ora should now display here. share ...
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Converting an array of objects to ActiveRecord::Relation

...e clause will generate a SQL statement with IN that looks something like: SELECT .... WHERE `my_models`.id IN (2, 3, 4, 6, .... Keep in mind that the ordering of the array will be lost - But since your objective is only to run a class method on the collection of these objects, I assume it won't b...
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Case insensitive Query with Spring CrudRepository

With Spring CrudRepository Query; I want to select "DeviceType" entities with it's "name" property. But following query select the entitles on case sensitive manner. How I make it case insensitive way. Thanks. ...
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Android Studio installation on Windows 7 fails, no JDK found

...dio. *Project Defaults* -> *Project Structure* -> Click "New" -> Select "Android SDK" -> Select the SDK folder inside the studio installation. share | improve this answer | ...
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USB Debugging option greyed out

...of this post. When you connect your phone to your PC, using the USB cable, select the mode as PC Software. Now you should be able to enable USB Debugging. share | improve this answer | ...
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How to install Hibernate Tools in Eclipse?

...bosstools/updates/stable/ Inside JBoss Web and Java EE Development folder, select Hibernate Tools Click on Next Once installed click on Window -> Show View -> Others. A new window pops up. Click on folder Hibernate and select Hibernate Configurations to setup a DB connection. It is possible ...
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What is the difference between IQueryable and IEnumerable?

...es, meaning the custom query logic it receives, e.g., a predicate or value selector, is in the form of an expression tree instead of a delegate to a method. IEnumerable<T> is great for working with sequences that are iterated in-memory, but IQueryable<T> allows for out-of memory things ...
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Difference between / and /* in servlet mapping url pattern

...tial difference between /* and / is that a servlet with mapping /* will be selected before any servlet with an extension mapping (like *.html), while a servlet with mapping / will be selected only after extension mappings are considered (and will be used for any request which doesn't match anything ...
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MySQL remove all whitespaces from the entire column

... Working Query: SELECT replace(col_name , ' ','') FROM table_name; While this doesn't : SELECT trim(col_name) FROM table_name; share | im...