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Generating a random & unique 8 character string using MySQL
... us to concentrate on the uniqueness first. Non-random uniqueness can trivially be achieved with AUTO_INCREMENT. So using a uniqueness-preserving, pseudo-random transformation would be fine:
Hash has been suggested by @paul
AES-encrypt fits also
But there is a nice one: RAND(N) itself!
A sequenc...
How do I get the “id” after INSERT into MySQL database with Python?
...d it can cause issues unless you properly utilize threadsafety. I've personally gone for instantiating a new connection for each thread, which is a cute workaround since for some reason committing (autocommitting actually) didn't work for me, I got some serious interweaving due to many concurrent th...
Entity Framework .Remove() vs. .DeleteObject()
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It's not generally correct that you can "remove an item from a database" with both methods. To be precise it is like so:
ObjectContext.DeleteObject(entity) marks the entity as Deleted in the context. (It's EntityState is Deleted after th...
How to check if an object is a certain type
...ou can simply compare them using the Is operator.
So your code should actually be written like this:
Sub FillCategories(ByVal Obj As Object)
Dim cmd As New SqlCommand("sp_Resources_Categories", Conn)
cmd.CommandType = CommandType.StoredProcedure
Obj.DataSource = cmd.ExecuteReader
I...
ASP.NET MVC Razor: How to render a Razor Partial View's HTML inside the controller action
...ethods available in an MVC controller class. Using a third party library called "RazorEngine" you can use .Net file IO to get the contents of the razor file and call
string html = Razor.Parse(razorViewContentString, modelObject);
Get the third party library here.
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How to compare dates in datetime fields in Postgresql?
...ime (i.e: 2013-05-03 12:20:00). This column has the value as timestamp for all rows currently and have the same date part(2013-05-03) but difference in time part.
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Difference between an application server and a servlet container?
...ost of the JavaEE technologies on a servlet-container, but you have to install a standalone implementation of the particular technology.
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How to use find command to find all files with extensions from list?
I need to find all image files from directory (gif, png, jpg, jpeg).
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How to show and update echo on same line
...hat saves me from going to a new line each time I echo something.
-e will allow me to interpret backslash escape symbols.
Guess what escape symbol I want to use for this: \r. Yes, carriage return would send me back to the start and it will visually look like I am updating on the same line.
So the...
Checkboxes in web pages – how to make them bigger?
The standard checkboxes rendered in most browsers are quite small and don’t increase in size even when a larger font is used. What is the best, browser-independent way to display larger checkboxes?
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