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Separation of business logic and data access in django
...ms like you are asking about the difference between the data model and the domain model – the latter is where you can find the business logic and entities as perceived by your end user, the former is where you actually store your data.
Furthermore, I've interpreted the 3rd part of your question a...
In C++, what is a virtual base class?
...his scenario, you have the possibility of ambiguity. What happens when you do this:
D d;
d.Foo(); // is this B's Foo() or C's Foo() ??
Virtual inheritance is there to solve this problem. When you specify virtual when inheriting your classes, you're telling the compiler that you only want a single...
How to check if a value exists in an array in Ruby
I have a value 'Dog' and an array ['Cat', 'Dog', 'Bird'] .
26 Answers
26
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Capturing URL parameters in request.GET
...in order to capture parameters in a URL, as described in the tutorial. How do I access parameters from the URL as part the HttpRequest object?
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How can I stop redis-server?
...
Either connect to node instance and use shutdown command or if you are on ubuntu you can try to restart redis server through init.d:
/etc/init.d/redis-server restart
or stop/start it:
/etc/init.d/redis-server stop
/etc/init.d/redis-server start
On Mac
redis-cli ...
MySQL error 1449: The user specified as a definer does not exist
...
You have two options:
1. Change the DEFINER
This is possibly easiest to do when initially importing your database objects, by removing any DEFINER statements from the dump.
Changing the definer later is a more little tricky:
How to change the definer for views
Run this SQL to generate the nec...
Execute and get the output of a shell command in node.js
...a way to obtain the output of a Unix terminal command. Is there any way to do this?
5 Answers
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What Makes a Method Thread-safe? What are the rules?
...evertheless not threadsafe:
https://stackoverflow.com/a/8883117/88656
Does that apply for static methods as well?
Absolutely not.
One answer, provided by @Cybis, was: "Local variables cannot be shared among threads because each thread gets its own stack."
Absolutely not. The distinguis...
How do I create a Linked List Data Structure in Java? [closed]
...s contained in it. Enhancements to this implementation include making it a double-linked list, adding methods to insert and delete from the middle or end, and by adding get and sort methods as well.
Note: In the example, the Link object doesn't actually contain another Link object - nextLink is a...
Disable pasting text into HTML form
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I recently had to begrudgingly disable pasting in a form element. To do so, I wrote a cross-browser* implementation of Internet Explorer's (and others') onpaste event handler. My solution had to be independent of any third-party JavaScript libraries.
Here's what I came up with. It doesn't com...