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Why is it bad practice to call System.gc()?

After answering a question about how to force-free objects in Java (the guy was clearing a 1.5GB HashMap) with System.gc() , I was told it's bad practice to call System.gc() manually, but the comments were not entirely convincing. In addition, no one seemed to dare to upvote, nor downvote my ...
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Does Swift have access modifiers?

In Objective-C instance data can be public , protected or private . For example: 17 Answers ...
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Can I set the height of a div based on a percentage-based width? [duplicate]

Let's say I've got a div that has a width of 50% of the body. How do I make its height equal to that value? So that when the browser window is 1000px wide, the div's height and width are both 500px. ...
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Reading an Excel file in python using pandas

I am trying to read an excel file this way : 8 Answers 8 ...
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Get an array of list element contents in jQuery

I have a structure like this: 6 Answers 6 ...
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jquery's append not working with svg element?

Assuming this: 14 Answers 14 ...
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How to add parameters to HttpURLConnection using POST using NameValuePair

I am trying to do POST with HttpURLConnection (I need to use it this way, can't use HttpPost ) and I'd like to add parameters to that connection such as ...
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In C#, how can I create a TextReader object from a string (without writing to disk)

I'm using A Fast CSV Reader to parse some pasted text into a webpage. The Fast CSV reader requires a TextReader object, and all I have is a string. What's the best way to convert a string into a TextReader object on the fly? ...
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Test or check if sheet exists

Basically I loop through all sheets in the origin workbook then set destsheet in the destination workbook to the sheet with the same name as the currently iterated one in the origin workbook. ...
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WAMP 403 Forbidden message on Windows 7

I have installed WAMP version 2.1 on my windows 7 machine. When i browse to localhost in my browser, the WAMP server page is visible. ...