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Django rest framework nested self-referential objects
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Edit: Note that there is now a third-party package available that specifically deals with this kind of use-case. See djangorestframework-recursive.
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Change URL and redirect using jQuery
...es the current location in the address bar by a new one. The page that was calling the function, won't be included in the browser history. Therefore, on the new location, clicking the back button in your browser would make you go back to the page you were viewing before you visited the document cont...
Alter column, add default constraint
...the stored procedure below to update the defaults on a column.
It automatically removes any prior defaults on the column, before adding the new default.
Examples of usage:
-- Update default to be a date.
exec [dbo].[AlterDefaultForColumn] '[dbo].[TableName]','Column','getdate()';
-- Update defaul...
CALL command vs. START with /WAIT option
...ifferences are nearly unimportant.
But to start an exe you don't even need CALL.
When starting another batch it's a big difference,
as CALL will start it in the same window and the called batch has access to the same variable context.
So it can also change variables which affects the caller.
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No serializer found for class org.hibernate.proxy.pojo.javassist.Javassist?
...d emphasize that this annotation is needed on the nested class and NOT the calling class.
– Darwayne
Oct 6 '17 at 17:24
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Can you test google analytics on a localhost address?
...versal Analytics - analytics.js
Google released a new version of analytics called "Universal Analytics" (late 2012 or early 2013). As I write, this the program is still in BETA so the above code is still recommended for most users with existing installations of Google Analytics.
However, for new dev...
Vim: Creating parent directories on save
...ories for files like ftp://* and !isdirectory will prevent expensive mkdir call.
Update: sligtly better solution that also checks for non-empty buftype and uses mkdir():
function s:MkNonExDir(file, buf)
if empty(getbufvar(a:buf, '&buftype')) && a:file!~#'\v^\w+\:\/'
let dir...
What is the advantage of using async with MVC5?
...ul only when you are performing I/O bound operations such as remote server calls. The benefit of the async call is that during the I/O operation, no ASP.NET worker thread is being used. So here's how the first example works:
When a request hits the action, ASP.NET takes a thread from the thread po...
DataContractSerializer doesn't call my constructor?
...ssible : when deserializing an object, the DataContractSerializer doesn't call the constructor !
4 Answers
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Understanding prototypal inheritance in JavaScript
...efficient because usually you need a function only once per type.
The new call in javascript automatically sets the constructor in the prototype. If you are overwriting the prototype so you have to set the constructor manually.
Inheritance in javascript has nothing like super. So if you have a sub...