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How do I undo 'git add' before commit?

...ing anything else. You can use git reset without any file name to unstage all due changes. This can come in handy when there are too many files to be listed one by one in a reasonable amount of time. In old versions of Git, the above commands are equivalent to git reset HEAD <file> and git re...
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Dump a mysql database to a plaintext (CSV) backup from the command line

...ne file per table is fine). But if there are advantages to mysqldump, I'm all ears. Also, I'd like something I can run from the command line (linux). If that's a mysql script, pointers to how to make such a thing would be helpful. ...
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M_PI works with math.h but not with cmath in Visual Studio

...) and suddenly it compile perfectly. Try moving it higher up the page. Totally unsure as to why this would cause issues though. Edit: Figured it out. The #include <math.h> occurs within cmath's header guards. This means that something higher up the list of #includes is including cmath with...
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Best way to iterate through a Perl array

...ay elements occurs. ($_ is aliased to the element in #1, but #2 and #3 actually copy the scalars from the array.) #5 might be similar. In terms memory usage: They're all the same except for #5. for (@a) is special-cased to avoid flattening the array. The loop iterates over the indexes of the array...
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Handler “ExtensionlessUrlHandler-Integrated-4.0” has a bad module “ManagedPipelineHandler” in its mo

...nformation Services (IIS). The solution I would recommend removing the call to SimpleWorkerRequest. Instead, you can use a Microsoft solution to make sure your web site automatically starts up after it recycles. What you need is the Microsoft Application Initialization Module for IIS 7.5. It is n...
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Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req

...ferent domain than your page is on. So the browser is blocking it as it usually allows a request in the same origin for security reasons. You need to do something different when you want to do a cross-domain request. A tutorial about how to achieve that is Using CORS. When you are using postman the...
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What does it mean: The serializable class does not declare a static final serialVersionUID field? [d

...ization runtime associates with each serializable class a version number, called a serialVersionUID, which is used during deserialization to verify that the sender and receiver of a serialized object have loaded classes for that object that are compatible with respect to serialization. If the receiv...
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After array_filter(), how can I reset the keys to go in numerical order starting at 0

... If you call array_values on your array, it will be reindexed from zero. share | improve this answer | follo...
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Git Clone: Just the files, please?

...hive. See backing up project which uses git: it will include in an archive all files (including submodules if you are using the git-archive-all script) You can then use that archive anywhere, giving you back only files, no .git directory. git archive --remote=<repository URL> | tar -t If y...
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#1071 - Specified key was too long; max key length is 1000 bytes

...tle have been answered before, but please do read on. I've read thoroughly all the other questions/answers on this error before posting. ...