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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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Strengths of Shell Scripting compared to Python [closed]

I tried to learn shell(bash) scripting few times but was driven away by the syntax. Then I found Python and was able to do most of the things a shell script can do in Python. I am now not sure whether I should invest my time in learning shell scripting anymore. So I want to ask: ...
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Proper stack and heap usage in C++?

I've been programming for a while but It's been mostly Java and C#. I've never actually had to manage memory on my own. I recently began programming in C++ and I'm a little confused as to when I should store things on the stack and when to store them on the heap. ...
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How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting

I have a set of data and I want to compare which line describes it best (polynomials of different orders, exponential or logarithmic). ...
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What generates the “text file busy” message in Unix?

What operation generates the error "text file busy"? I am unable to tell exactly. 12 Answers ...
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In what order do static/instance initializer blocks in Java run?

Say a project contains several classes, each of which has a static initializer block. In what order do those blocks run? I know that within a class, such blocks are run in the order they appear in the code. I've read that it's the same across classes, but some sample code I wrote disagrees with t...
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OpenLayers vs Google Maps? [closed]

I have used Google Maps a couple of times, but what wondering about OpenLayers . Before starting any kind of coding, here are a couple of questions that come to my mind, ...
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How to use a variable for a key in a JavaScript object literal?

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When to use a Content Provider

I understand that Content Providers are made to allow publicly sharing data between applications. However, I'm wondering if anyone has thoughts about making a Content Provider to use just within your own app. Would there be any advantages to doing this? Any disadvantages? ...
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How to model type-safe enum types?

Scala doesn't have type-safe enum s like Java has. Given a set of related constants, what would be the best way in Scala to represent those constants? ...