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How can I determine if a variable is 'undefined' or 'null'?
...
I'm trying to test if event is null in firefox and an error blocks the execution: "event is undefined"
– Entretoize
Sep 6 '18 at 10:32
...
How should a model be structured in MVC? [closed]
...Identification $exception) {
$data = [
'status' => 'error',
'message' => 'Login failed!',
]
}
return new JsonResponse($data);
}
While this is not sustainable, when you have complicate logic for rendering a response body, this simplification is...
How to add a new method to a php object on the fly?
...gt;color;};
$a->sayhello();//output: "hello!"
$a->printmycolor();//ERROR: Undefined variable $this
In order to solve this problem you can rewrite the pattern in this way
class AnObj extends stdClass
{
public function __call($closure, $args)
{
return call_user_func_array($t...
What is the best way to check for Internet connectivity using .NET?
...google.com does not return some HTML :)
– Daniel Vassallo
Jan 9 '10 at 1:01
3
@Daniel: true on th...
Missing return statement in a non-void method compiles
...
So why this code gives compile time error:public int doNotReturnAnything() { boolean flag = true; while (flag) { //Do something } //no return } This code also does not have a break point. So now how the compiler...
Difference between del, remove and pop on lists
...gt;> a = [4, 3, 5]
>>> a.pop(1)
3
>>> a
[4, 5]
Their error modes are different too:
>>> a = [4, 5, 6]
>>> a.remove(7)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: list.remove(x): x not in list
>>> de...
Making an array of integers in iOS
...rays are such a hassle for anything but trivial, one-off use that it's actually less trouble to wrap any arrays you plan on keeping around as NSArrays of NSNumber.
– Chuck
Jul 27 '10 at 1:58
...
Facebook Graph API, how to get users email?
... window.location.href = '/create-account';
}
},
error: function(data){
console.log('Error logging in via email !');
// alert('Fail to send login request !');
}
});
}
sh...
How do you create different variable names while in a loop? [duplicate]
...st that don't yet exist (you'll get a "list assignment index out of range" error). You may want to use string.append("Hello") instead.
– Greg Hewgill
May 31 '11 at 1:10
1
...
How to build a jar using maven, ignoring test results? [duplicate]
...e) - will ignore any failures occurred during test execution
-Dmaven.test.error.ignore=true ( deprecated ) - will ignore any errors occurred during test execution
-DskipTests - would compile the test classes but skip test execution entirely
-Dmaven.test.skip=true - would not even compile the test...