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Entity Framework 4 - AddObject vs Attach
... instance is disconnected from ctx2
}
If you enter another "using" scope then the "e" variable will be disconnected because it belongs to the previous "using" scope and since the previous "using" scope is destroyed then "e" is disconnected.
That's how I understand it.
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How to convert SSH keypairs generated using PuTTYgen (Windows) into key-pairs used by ssh-agent and
...ports exporting your private key to an OpenSSH compatible format. You can then use OpenSSH tools to recreate the public key.
Open PuttyGen
Click Load
Load your private key
Go to Conversions->Export OpenSSH and export your private key
Copy your private key to ~/.ssh/id_dsa (or id_rsa).
Create t...
Java: how to initialize String[]?
...t migrated from C++, Well in java you have to initialize a data type(other then primitive types and String is not a considered as a primitive type in java ) to use them as according to their specifications if you don't then its just like an empty reference variable (much like a pointer in the contex...
Clearing purchases from iOS in-app purchase sandbox for a test user
... header file put #define PRODUCT_ID1 @"Extra_Levels" (with no semicolon!), then the preprocessor will search PRODUCT_ID1 and substitute it for @"Extra_Levels". Then creating a new non-consumable called @"Extra_Levels_01" and changing the #define will be as good as resetting the purchases for all you...
What is the difference between _tmain() and main() in C++?
...e second signature with this:
int wmain(int argc, wchar_t* argv[]);
And then, to make it easier to switch between Unicode (UTF-16) and their multibyte character set, they've defined _tmain which, if Unicode is enabled, is compiled as wmain, and otherwise as main.
As for the second part of your q...
Generate colors between red and green for a power meter?
...to 100%
green = 1.0
red = 2 * power
if 0.5<=power<=1: #then red stays at 100%, green decays
red = 1.0
green = 1.0 - 2 * (power-0.5)
The red, green, blue values in the above example are percentages, you'd probably want to multiply them by 255 to get the most used 0-255 r...
Why should we typedef a struct so often in C?
...ally naming it is also useful for when you want to provide an opaque type. Then you'd have code like this in the header, for instance:
typedef struct Point Point;
Point * point_new(int x, int y);
and then provide the struct definition in the implementation file:
struct Point
{
int x, y;
};
P...
Delete a project from SonarQube
... Administration" documentation page
If you are a SonarQube administrator, then you can also delete a project from the "Project Management" page
=> See "Project Management/Project Existence" documentation page
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typecast string to integer - Postgres
...L) does not work, so my solution would be:
SELECT CASE WHEN column = NULL THEN NULL ELSE column :: Integer END
FROM table
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How do you share constants in NodeJS modules?
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You can explicitly export it to the global scope with global.FOO = 5. Then you simply need to require the file, and not even save your return value.
But really, you shouldn't do that. Keeping things properly encapsulated is a good thing. You have the right idea already, so keep doing what you...