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Logical Operators, || or OR?
...s a boolean. If it returns a value PHP considers truthy (true, a non-empty string, etc.), it will not call die().
– Matthew Ratzloff
Nov 1 '13 at 17:20
...
Calling closure assigned to object property directly
...t;__invoke();
Of course that won't work if the callback is an array or a string (which can also be valid callbacks in PHP) - just for closures and other objects with __invoke behavior.
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How to remove all event handlers from an event
...s working code:
public static void ClearEventInvocations(this object obj, string eventName)
{
var fi = obj.GetType().GetEventField(eventName);
if (fi == null) return;
fi.SetValue(obj, null);
}
private static FieldInfo GetEventField(this Type type, string eventName)
{
FieldInfo fiel...
How to turn IDENTITY_INSERT on and off using SQL Server 2008?
...NSERT ... VALUES ... commands started with one SET IDENTITY_INSERT ... ON; string at the beginning. Just don't put any batch separator between.
I don't know why the SET IDENTITY_INSERT ... ON stops working after the sending block (for ex.: .ExecuteNonQuery() in C#). I had to put SET IDENTITY_INSER...
parsing JSONP $http.jsonp() response in angular.js
...
UPDATE: since Angular 1.6
You can no longer use the JSON_CALLBACK string as a placeholder for
specifying where the callback parameter value should go
You must now define the callback like so:
$http.jsonp('some/trusted/url', {jsonpCallbackParam: 'callback'})
Change/access/declare param...
Structs in Javascript
...careful if you use the closure compiler. The tuple can only be accessed as string in this case, because the properties are renamed. (At least in advanced mode)
– kap
Mar 24 '16 at 8:15
...
What is a predicate in c#? [duplicate]
... T object.
For example suppose I have a class:
class Person {
public string Name { get; set; }
public int Age { get; set; }
}
Now let's say I have a List<Person> people and I want to know if there's anyone named Oscar in the list.
Without using a Predicate<Person> (or Linq, ...
How to create UILabel programmatically using Swift?
...
Thank you man, I have a question, if I want to pass a string to self.text inside a class to iniciate like this: myLabel = MyLabel(string: "text")
– Daniel Beltrami
Apr 9 '19 at 17:42
...
How do I get the key at a specific index from a Dictionary in Swift?
...tialize a new array with the keys or values property:
let airportCodes = [String](airports.keys) // airportCodes is ["TYO", "LHR"]
let airportNames = [String](airports.values) // airportNames is ["Tokyo", "London Heathrow"]
...
What is the purpose of the reader monad?
...lculus has a syntax that looks like
data Term = Apply Term Term | Lambda String Term | Var Term deriving (Show)
and we want to write an evaluator for this language. To do so, we will need to keep track of an environment, which is a list of bindings associated with terms (actually it will be clos...