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ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type
In a nutshell the exception is thrown during POSTing wrapper model and changing the state of one entry to 'Modified'. Before changing the state, the state is set to 'Detached' but calling Attach() does throw the same error. I'm using EF6.
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How many String objects will be created when using a plus sign?
...;
Furthermore, the compiler will remove extraneous constant expressions, and only emit them if they are used or exposed. For instance, this program:
const String one = "1";
const String two = "1";
const String result = one + two + "34";
public static void main(string[] args) {
Console.Out.W...
How to declare a structure in a header that is to be used by multiple files in c?
...each source file needed it.
The right way is putting it in an header file, and include this header file whenever needed.
shall we open a new header file and declare the structure there and include that header in the func.c?
This is the solution I like more, because it makes the code highly modular. ...
Overriding superclass property with different type in Swift
...properties. Instead you can create an extra variable in the subclass that handles the new class type:
class Chassis {}
class RacingChassis : Chassis {}
class Car {
var chassis = Chassis()
}
class RaceCar: Car {
var racingChassis = RacingChassis()
override var chassis: Chassis {
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Javascript shorthand ternary operator
...ng way (as mentioned by the documentation):
Returns expr1 if it can be converted to true; otherwise, returns expr2. Thus, when used with Boolean values, || returns true if either operand is true; if both are false, returns false.
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Ways to eliminate switch in code [closed]
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-1: I've never used a switch statement with typeof, and this answer doesn't suggest ways or reasons to work around switch statements in other situations.
– Kevin
Jun 18 '13 at 21:00
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PHP parse/syntax errors; and how to solve them
...re Bracket "["
BTW, there are also preprocessors and PHP 5.4 syntax down-converters if you're really clingy with older + slower PHP versions.
Other causes for Unexpected [ syntax errors
If it's not the PHP version mismatch, then it's oftentimes a plain typo or newcomer syntax mistake:
You can'...
Is there an alternative to string.Replace that is case-insensitive?
I need to search a string and replace all occurrences of %FirstName% and %PolicyAmount% with a value pulled from a database. The problem is the capitalization of FirstName varies. That prevents me from using the String.Replace() method. I've seen web pages on the subject that suggest
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How can I get a list of all functions stored in the database of a particular schema in PostgreSQL?
I want to be able to connect to a PostgreSQL database and find all of the functions for a particular schema.
9 Answers
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What exactly does the .join() method do?
... using the JOIN method, we can add the distance between the words and also convert the list to the string.
This is Python output
'my name is kourosh'
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