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What is memory fragmentation?

...emory fragmentation" used a few times in the context of C++ dynamic memory allocation. I've found some questions about how to deal with memory fragmentation, but can't find a direct question that deals with it itself. So: ...
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How to install GCC piece by piece with GMP, MPFR, MPC, ELF, without shared libraries?

How do I install GCC (the GNU Compiler Collection) piece by piece, using the current version, using the correct versions of dependencies, not using a package manager (like yum, rpm, apt, dpkg), and not using shared libraries? ...
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Is it possible to have different Git configuration for different projects?

.gitconfig is usually stored in the user.home directory. 12 Answers 12 ...
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Copying text to the clipboard using Java

...lipboard, making it available to be pasted into other programs such as Microsoft Word. I have the text from the JTable , but I am unsure how to copy it to the clipboard. ...
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How to read a large file - line by line?

... The for line in f treats the file object f as an iterable, which automatically uses buffered I/O and memory management so you don't have to worry about large files. There should be one -- and preferably only one -- obvious way to do it. ...
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How to determine programmatically whether a particular process is 32-bit or 64-bit

...{ using System; using System.ComponentModel; using System.Diagnostics; using System.Runtime.InteropServices; internal static class Program { private static void Main() { foreach (var p in Process.GetProcesses()) { try ...
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BASH copy all files except one

I would like to copy all files out of a dir except for one named Default.png. It seems that there are a number of ways to do this. What seems the most effective to you? ...
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Is git not case sensitive?

In the first commitment of my partial called _Electronics it was written beginning with a capital letters, then I changed it to _electronics . ...
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Is there a way to iterate over a dictionary?

...ere you need a key in order to get a value . But how can I iterate over all keys and values in a NSDictionary , so that I know what keys there are, and what values there are? I know there is something called a for-in-loop in JavaScript . Is there something similar in Objective-C ? ...
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How can Xcode 6 adaptive UIs be backwards-compatible with iOS 7 and iOS 6?

...se changed constraints are visible in the iPad Simulator running iOS 7.0. All size class optimizations are made available to iOS 7, except size classes that have a Compact Height. This has been confirmed by Apple and is now stated directly in the documentation: For apps supporting versions of iOS ...