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Why doesn't margin:auto center an image?

The div expands to 100% as it should but the image does not center itself. Why? 8 Answers ...
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Run function from the command line

... With the -c (command) argument (assuming your file is named foo.py): $ python -c 'import foo; print foo.hello()' Alternatively, if you don't care about namespace pollution: $ python -c 'from foo import *; print hello()' And the middle g...
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How to do constructor chaining in C#

... You use standard syntax (using this like a method) to pick the overload, inside the class: class Foo { private int id; private string name; public Foo() : this(0, "") { } public Foo(int id, string name) ...
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Eclipse Android Plugin — libncurses.so.5

I am struggling mightily with installing ADT (Android Dev Tools) on Eclipse in Fedora 16 OS, 64-bit. 7 Answers ...
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How to exclude certain directories/files from git grep search

...rep ? Something similar to the --exclude option in the normal grep command? 5 Answers ...
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How can I round a number in JavaScript? .toFixed() returns a string?

... It returns a string because 0.1, and powers thereof (which are used to display decimal fractions), are not representable (at least not with full accuracy) in binary floating-point systems. For example, 0.1 is really 0.100000000000000005551115123125782702118...
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How does the C code that prints from 1 to 1000 without loops or conditional statements work?

...prints from 1 to 1000 without loops or conditionals : But I don't understand how it works. Can anyone go through the code and explain each line? ...
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How do I globally configure RSpec to keep the '--color' and '--format specdoc' options turned on

... As you can see in the docs here, the intended use is creating ~/.rspec and in it putting your options, such as --color. To quickly create an ~/.rspec file with the --color option, just run: echo '--color' >> ~/.rspec ...
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How to check if a column exists in Pandas

Is there a way to check if a column exists in a Pandas DataFrame? 3 Answers 3 ...
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How to get domain URL and application name?

...context path) is available by calling HttpServletrequest#getContextPath() (and thus NOT getServletPath() as one suggested before). You can retrieve this in JSP by ${pageContext.request.contextPath}. <p>The context path is: ${pageContext.request.contextPath}.</p> If you intend to use ...