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How do I quickly rename a MySQL database (change schema name)?
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For InnoDB, the following seems to work: create the new empty database, then rename each table in turn into the new database:
RENAME TABLE old_db.table TO new_db.table;
You will need to adjust the permissions after that.
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Can you find all classes in a package using reflection?
...the VM which classes it can provide, instead they are just handed requests for classes, and have to return a class or throw an exception.
However, if you write your own class loaders, or examine the classpaths and it's jars, it's possible to find this information. This will be via filesystem operat...
Programmatically find the number of cores on a machine
... there a way to determine how many cores a machine has from C/C++ in a platform-independent way? If no such thing exists, what about determining it per-platform (Windows/*nix/Mac)?
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How do I convert a string to a double in Python?
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Use >>> 0.1 + 0.2 for double. >>> 0.1 + 0.6 for float.
– user1510539
Sep 4 '17 at 10:03
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Adding Xcode Workspace Schemes to Version Control
...be moved into a folder called "xcshareddata".
Update: This works the same for Xcode 4-8.
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How can I change the copyright template in Xcode 4?
Does anyone know how to change copyright in the templates for Xcode? That is, at the top of a new file it writes:
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What is the difference between origin and upstream on GitHub?
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This should be understood in the context of GitHub forks (where you fork a GitHub repo on GitHub before cloning that fork locally).
upstream generally refers to the original repo that you have forked
(see also "Definition of “downstream” and “upstream”" for more on ...
How to disable visual “dots” in Visual Studio Editor
How can I can disable the "dots" for spaces in Microsoft Visual Studio?
5 Answers
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MongoDB: How to query for records where field is null or not set?
... null, or not there at all:
db.emails.count({sent_at: null})
Refer here for querying and null
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Scripting TFS Command Line for Get Latest Version, Check Out and Check in, programmatically
...E (depending on Visual Studio version and installation settings).
Example for get:
cd C:\TFS\Arquitectura
"%PathToIde%\TF.exe" get $/Arquitectura/Main /recursive
Example for checkout:
cd C:\TFS\Arquitectura
"%PathToIde%\TF.exe" checkout $/Arquitectura/Main /recursive
Example for checkin:
cd ...