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Array vs. Object efficiency in JavaScript

I have a model with possibly thousands of objects. I was wondering what would be the most efficient way of storing them and retrieving a single object once I have it's id. The id's are long numbers. ...
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Can Selenium interact with an existing browser session?

... is able to communicate with and act through a browser that is already running before launching a Selenium Client? 11 Answ...
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Is a one column table good design? [closed]

... Yes, it's certainly good design to design a table in such a way as to make it most efficient. "Bad RDBMS Design" is usually centered around inefficiency. However, I have found that most cases of single column design could benefit from an ...
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Naming “class” and “id” HTML attributes - dashes vs. underlines [closed]

...tween your HTML and JavaScript. Why? see below. Hyphens are valid to use in CSS and HTML but not for JavaScript Objects. A lot of browsers register HTML Ids as global objects on the window/document object, in big projects, this can become a real pain. For this reason, I use names with Hyphens th...
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Delete all Duplicate Rows except for One in MySQL? [duplicate]

... Editor warning: This solution is computationally inefficient and may bring down your connection for a large table. NB - You need to do this first on a test copy of your table! When I did it, I found that unless I also included AND n1...
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What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?

I was going through the release notes for Xcode 4.4 and noticed this: 3 Answers 3 ...
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Python/postgres/psycopg2: getting ID of row just inserted

I'm using Python and psycopg2 to interface to postgres. 3 Answers 3 ...
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How to get an array of specific “key” in multidimensional array without looping

Let's assume I have the following multidimensional array (retrieved from MySQL or a service): 4 Answers ...
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How to delete an SMS from the inbox in Android programmatically?

...ones SMS messages registered to applications also get sent to the device's inbox. However to prevent clutter, it'd be nice to be able to remove application specific SMS messages from the inbox to reduce the potential overflow of those messages. ...
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YouTube iframe API: how do I control an iframe player that's already in the HTML?

...able to control iframe based YouTube players. This players will be already in the HTML, but I want to control them via the JavaScript API. ...