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How update the _id of one MongoDB Document?
I want update an _id field of one document. I know it's not a really good pratice. But with some technical reason, I need update it. If I try to update it I get:
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Do I have to Close() a SQLConnection before it gets disposed?
...d be they won't change that behaviour simply because it's what people have now come to expect.
– user593806
Jan 2 '13 at 11:12
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@UniqueConstraint annotation in Java
I have a Java bean. Now, I want to be sure that the field should be unique.
8 Answers
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What is SQL injection? [duplicate]
...erabilities because attackers can send values to an application that they know will be interpolated into a SQL string. By being very clever, they can manipulate the result of queries, reading data or even changing data that they shouldn't be allowed to do.
Example in PHP:
$password = $_POST['pass...
How to manually set an authenticated user in Spring Security / SpringMVC
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Thank you, the code is very helpful in helping me know that I'm troubleshooting in the right area. Looks like I have a smoking gun, it's creating a new session id after the manual authentication, but the old session id is still being identified from the cookie. Gotta figure o...
What is the difference between __dirname and ./ in node.js?
...and just discovered the existence of __dirname , and essentially want to know whether it would be smart to convert my ./'s to that, and if so, why that would be a smart idea.
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How do you get assembler output from C/C++ source in gcc?
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Sadly, as on OS X doesn't know these flags. If it did, though, you could probably one-line this using -Wa to pass options to as.
– Grumdrig
Apr 5 '13 at 4:57
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Abstract classes in Swift Language
...e {
func accelerate(by: Float) {
speed += by
}
}
You can now create new types by implementing Drivable.
struct Car: Drivable {
var speed: Float = 0.0
init() {}
}
let c = Car()
c.accelerate(10)
So basically you get:
Compile time checks that guarantee that all Drivables...
Wait for a void async method
... await Task.Run(() => An_async_void_method_I_can_not_modify_now())
– themefield
Mar 12 '19 at 21:46
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Cannot kill Python script with Ctrl-C
...s keep the main thread alive:
import time
while True:
time.sleep(1)
Now it will keep print 'first' and 'second' until you hit Ctrl+C.
Edit: as commenters have pointed out, the daemon threads may not get a chance to clean up things like temporary files. If you need that, then catch the Keyboa...