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Is it necessary to write HEAD, BODY and HTML tags?

... Omitting the html, head, and body tags is certainly allowed by the HTML specs. The underlying reason is that browsers have always sought to be consistent with existing web pages, and the very early versions of HTML didn't define those elements. When HTML 2.0 first did, it was ...
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Rails create or update magic?

I have a class called CachedObject that stores generic serialised objects indexed by key. I want this class to implement a create_or_update method. If an object is found it will update it, otherwise it will create a new one. ...
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String.Join method that ignores empty strings?

... I had some luck with this instead: Array.FindAll(myArray, Function(s) Not String.IsNullOrEmpty(s)) Can you either change your answer or explain the Where statement? – Doug May 2 '13 at 13:44 ...
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What is the difference between 'classic' and 'integrated' pipeline mode in IIS7?

...tely blended and integrated in IIS. In this mode, ASP.NET HttpModules basically have nearly as much power as an ISAPI filter would have had and ASP.NET HttpHandlers can have nearly equivalent capability as an ISAPI extension could have. In this mode, ASP.NET is basically a part of IIS. ...
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git - Your branch is ahead of 'origin/master' by 1 commit

...ur changes for committing git commit - this commits your staged changes locally git push - this pushes your committed changes to a remote If you push without committing, nothing gets pushed. If you commit without adding, nothing gets committed. If you add without committing, nothing at all happens...
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Grep not as a regular expression

...as grep -F. Direct invocation as fgrep is deprecated, but is provided to allow historical applications that rely on them to run unmodified. For the complete reference, check: https://www.gnu.org/savannah-checkouts/gnu/grep/manual/grep.html ...
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Cannot set content-type to 'application/json' in jQuery.ajax

...S header is used to find out if the request from the originating domain is allowed. Using fiddler, I added the following to the response headers from my server. Access-Control-Allow-Origin: * Access-Control-Allow-Headers: Content-Type Access-Control-Allow-Methods: POST, GET, OPTIONS Once the b...
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Converting from longitude\latitude to Cartesian coordinates

...'re talking about a distance of a few feet and even then there is theoretically curvature of the Earth... If you require more rigidly WGS-84 compatible approach checkout the "Vincenty Formula." I understand where starblue is coming from, but good software engineering is often about trade offs, so ...
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Differences in boolean operators: & vs && and | vs ||

...)){ } "Short-circuiting" means the operator does not necessarily examine all conditions. In the above examples, && will examine the second condition only when a is not null (otherwise the whole statement will return false, and it would be moot to examine following conditions anyway), so th...
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How do I set up a basic Ruby project?

I want to create a small Ruby project with 10 ~ 20 classes/files. I need some gems and I want to use RSpec as test framework. ...