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SQL Add foreign key to existing column
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MySQL / SQL Server / Oracle / MS Access:
ALTER TABLE Orders
ADD FOREIGN KEY (P_Id)
REFERENCES Persons(P_Id)
To allow naming of a FOREIGN KEY constraint, and for defining a FOREIGN KEY constraint on multiple columns, use the following SQL syntax:
MySQL / SQL Server / Oracle /...
Storing C++ template function definitions in a .CPP file
... what does this buy you? You still need to edit foo-impl.cpp in order to add a new specialization.
– MK.
Mar 22 '17 at 14:16
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Difference between Divide and Conquer Algo and Dynamic Programming
... there are two key attributes that divide and conquer problem must have in order for dynamic programming to be applicable:
Optimal substructure — optimal solution can be constructed from optimal solutions of its subproblems
Overlapping sub-problems — problem can be broken down into sub...
NSUserDefaults not cleared after app uninstall on simulator
...apabilities), then you will have to remove all the apps from the device in order for the user defaults to be cleared. Since the user defaults are shared, even if one of the app is on the device then it will not be deleted, as that app will be using the userdefaults.
– Ankit Sr...
Java - Method name collision in interface implementation
...me class should also implement a Platform interface of a MVVM framework in order to get integrated.
Method collision occurred on a getString() method, which is announced by both interfaces and should have differenet implementation in different contexts.
The workaround (ugly..IMO) is using an inner c...
Execute command on all files in a directory
...d executions is redirected to
results.out
However, if you care about the order in which the files are processed, you
might be better off writing a loop. I think find processes the files
in inode order (though I could be wrong about that), which may not be what
you want.
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AngularJS Multiple ng-app within a page
...shoppingCart" ng-controller="ShoppingCartController">
<h1>Your order</h1>
<div ng-repeat="item in items">
<span>{{item.product_name}}</span>
<span>{{item.price | currency}}</span>
<button ng-click="remove($index);">Remove</bu...
How do I get started with Node.js [closed]
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Are the books ordered by your value in them or randomly? Looking to purchase a good reference manual on nodeJS's basics.
– David
May 17 '11 at 15:11
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How to handle command-line arguments in PowerShell
...that is not a bug! Powershell will process and assign the arguments in the order they're given, unless overridden by using the proper parameter name, e.g., if your param block lists: $user $pass $server, and you execute yourscript.ps1 a b c, a will be set into $user, b into $pass and c into $server,...
How do I rename a repository on GitHub?
...sitory and then proceed to clone the repo so you can have a local copy. In order to rename the Github repo, you just need to:
Go to the repository site (i.e https://github.com/userX/repositoryZ).
In the navigation bar, you will see a tab named "Settings". Click on it.
Just edit the current reposit...