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Why does one use dependency injection?
...gging about accessing the database. Suppose you have another class Logger, then Database has a dependency to Logger.
So far, so good.
You can model this dependency inside your Database class with the following line:
var logger = new Logger();
and everything is fine. It is fine up to the day whe...
Update relationships when saving changes of EF4 POCO objects
...f each contact is new and add, check if updated and edit, check if removed then delete it from the database. Once you have to do this for a few different aggregates in a large system you start to realize there must be a better, more generic way.
Please take a look and see if it can help http://ref...
How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
...
Not the answer you're looking for? Browse other questions tagged asp.net-mvc-3 ef-code-first entity-framework-4.1 or ask your own question.
Regex Pattern to Match, Excluding when… / Except between
...rbage bin".
The content you do want, however, is captured to Group 1. You then have to check programmatically that Group 1 is set and not empty. This is a trivial programming task (and we'll later talk about how it's done), especially considering that it leaves you with a simple regex that you can ...
CROSS JOIN vs INNER JOIN in SQL
...ables (combining every record in table A with every record in table B) and then returning all records which satisfy the join predicate.
The "implicit join notation" simply lists the tables for joining, in the FROM clause of the SELECT statement, using commas to separate them. Thus it specifie...
How to get the text node of an element?
...
var text = $(".title").contents().filter(function() {
return this.nodeType == Node.TEXT_NODE;
}).text();
This gets the contents of the selected element, and applies a filter function to it. The filter function returns only text nodes (i.e. those nodes with nodeT...
What is the maximum possible length of a query string?
... of Safari only supported 4000 characters and thus had difficulty handling ASP.net pages because of the USER-STATE. This is even for POST, so you would have to check the browser and see what the stack limit is. I think that you may reach a limit even on newer browsers. I cannot remember but one o...
Asking the user for input until they give a valid response
...
Why would you do a while True and then break out of this loop while you can also just put your requirements in the while statement since all you want is to stop once you have the age?
age = None
while age is None:
input_value = input("Please enter your a...
Extracting text OpenCV
...DforTye Take the horizontal projection of the filled contour (cv::reduce), then threshold it (say, using mean or median height). If you visualize this result, it'll look like a barcode. I think, at the time, I was thinking of counting the number of bars, and imposing a threshold on it. Now I think, ...
How do you parse and process HTML/XML in PHP?
...uage, chances are you will already know how to use that language's DOM API then.
A basic usage example can be found in Grabbing the href attribute of an A element and a general conceptual overview can be found at DOMDocument in php
How to use the DOM extension has been covered extensively on Stack...