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How to determine if a type implements an interface with C# reflection
....GetInterfaces().Contains(typeof(IMyInterface))
For a generic interface, it’s a bit different.
typeof(MyType).GetInterfaces().Any(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IMyInterface<>))
...
Fatal error: unexpectedly found nil while unwrapping an Optional values [duplicate]
...
Almost certainly, your reuse identifier "title" is incorrect.
We can see from the UITableView.h method signature of dequeueReusableCellWithIdentifier that the return type is an Implicitly Unwrapped Optional:
func dequeueReusableCellWithIdentifier(identifier: String...
How do I run Redis on Windows?
...
Download Microsoft's port from their GitHub repository.
This release includes the redis-server.exe application that runs a Redis instance as a service on your windows machine, as well as redis-cli.exe which you can use to interact with any Redis instance.
The RGL...
How does the Java 'for each' loop work?
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for (Iterator<String> i = someIterable.iterator(); i.hasNext();) {
String item = i.next();
System.out.println(item);
}
Note that if you need to use i.remove(); in your loop, or access the actual iterator in some wa...
make div's height expand with its content
...ion still gets a fair amount of traffic, so I wanted to update the answer with a modern alternative using a new layout mode in CSS3 called Flexible boxes or Flexbox:
body {
margin: 0;
}
.flex-container {
display: flex;
flex-direction: column;
min-height: 100vh;
}
header {
...
Proper way to make HTML nested list?
... list example prefixed by DEPRECATED EXAMPLE: , but they never corrected it with a non-deprecated example, nor explained exactly what is wrong with the example.
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How to avoid isset() and empty()
... the E_NOTICE error level, because the existence of variables is not explicitly checked using isset() and consorts.
11 An...
How do I delete an exported environment variable?
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but this only works for a session, what about unsetting it definitely? or maybe searching where is the variable set, so you can go and delete it?
– eLRuLL
Apr 19 '14 at 15:35
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ActiveRecord.find(array_of_ids), preserving order
...only
There is a function in mysql called FIELD()
Here is how you could use it in .find():
>> ids = [100, 1, 6]
=> [100, 1, 6]
>> WordDocument.find(ids).collect(&:id)
=> [1, 6, 100]
>> WordDocument.find(ids, :order => "field(id, #{ids.join(',')})")
=> [100, 1, 6]
...
How to convert a currency string to a double with jQuery or Javascript?
I have a text box that will have a currency string in it that I then need to convert that string to a double to perform some operations on it.
...