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A CORS POST request works from plain JavaScript, but why not with jQuery?
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Can you look in the JavaScript error console (or Firebug's console) and see if there are any errors during the request? Also, if you know how to use Wireshark, you can use that to see the actual HTTP requests going over the wire.
– m...
Java Can't connect to X11 window server using 'localhost:10.0' as the value of the DISPLAY variable
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unset DISPLAY helped me (with export DISPLAY=:0 I got the error Can't connect to X11 window server using ':0'
– beluchin
Dec 11 '15 at 15:41
2
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Thymeleaf: how to use conditionals to dynamically add/remove a CSS class
... can't have multiple th:classappend attributes. Max one is allowed. Fatal error during parsing org.xml.sax.SAXParseException: Attribute "th:classappend" was already specified for element "img".
– user1053510
Sep 29 '17 at 13:38
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Mongod complains that there is no /data/db folder
...ify the db-path manually. I wouldn't recommend doing that.
Edit:
the error message you're getting is "Unable to create/open lock file: /data/db/mongod.lock errno:13 Permission denied". The directory you created doesn't seem to have the correct permissions and ownership --
it needs to be writa...
Why is enum class preferred over plain enum?
...mal a = Animal::deer;
Mammal m = Mammal::deer;
int num2 = a; // error
if (m == a) // error (good)
cout << "bad" << endl;
if (a == Mammal::deer) // error (good)
cout << "bad" << endl;
}
Conclusion:
enum classes should be preferred ...
Sell me on const correctness
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Here's a piece of code with a common error that const correctness can protect you against:
void foo(const int DEFCON)
{
if (DEFCON = 1) //< FLAGGED AS COMPILER ERROR! WORLD SAVED!
{
fire_missiles();
}
}
...
Why can I change value of a constant in javascript
... // ['foo2']
but neither of these:
const x = {};
x = {foo: 'bar'}; // error - re-assigning
const y = ['foo'];
const y = ['bar']; // error - re-declaring
const foo = 'bar';
foo = 'bar2'; // error - can not re-assign
var foo = 'bar3'; // error - already declared
function foo() {}; // ...
The server principal is not able to access the database under the current security context in SQL Se
...login is fine but when I use the command use myDatabase it gives me this error:
9 Answers
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SQL Server principal “dbo” does not exist,
I am getting the following error
11 Answers
11
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Declaring abstract method in TypeScript
...(5);
}
}
The old way of mimicking an abstract method was to throw an error if anyone used it. You shouldn't need to do this any more once TypeScript 1.6 lands in your project:
class Animal {
constructor(public name) { }
makeSound(input : string) : string {
throw new Error('Thi...