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Where does Oracle SQL Developer store connections?

I have an application that I can't get connected to my Oracle Database 11g Express Edition. I created a test database in this edition, and I can connect to the database fine using Oracle SQL Developer, create tables, views etc. However, I'm having a hard time getting connected via my application. Wh...
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Commands out of sync; you can't run this command now

I am trying to execute my PHP code, which calls two MySQL queries via mysqli, and get the error "Commands out of sync; you can't run this command now". ...
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Error: Could not find or load main class in intelliJ IDE

I'm a beginner in Java and am trying to run my code using IntelliJ that I just installed as my IDE with JDK 1.7. The following piece of code keeps does not even compile and keeps giving me the error: ...
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Binding arrow keys in JS/jQuery

How do I go about binding a function to left and right arrow keys in Javascript and/or jQuery? I looked at the js-hotkey plugin for jQuery (wraps the built-in bind function to add an argument to recognize specific keys), but it doesn't seem to support arrow keys. ...
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Javascript Thousand Separator / string format [duplicate]

Is there any function in Javascript for formatting number and strings ? 15 Answers 15 ...
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Fastest way to convert an iterator to a list

Having an iterator object, is there something faster, better or more correct than a list comprehension to get a list of the objects returned by the iterator? ...
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Correct way to use get_or_create?

I'm trying to use get_or_create for some fields in my forms, but I'm getting a 500 error when I try to do so. 5 Answers ...
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How do you use Mongoose without defining a schema?

In previous versions of Mongoose (for node.js) there was an option to use it without defining a schema 5 Answers ...
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Find MongoDB records where array field is not empty

All of my records have a field called "pictures". This field is an array of strings. 11 Answers ...
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SQL, Postgres OIDs, What are they and why are they useful?

I am looking at some PostgreSQL table creation and I stumbled upon this: 4 Answers 4 ...