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How do I check if a type is a subtype OR the type of an object?
... that demonstrates:
void Main()
{
typeof(Derived).IsSubclassOf(typeof(Base)).Dump();
typeof(Base).IsSubclassOf(typeof(Base)).Dump();
}
public class Base { }
public class Derived : Base { }
Output:
True
False
Which indicates that Derived is a subclass of Base, but that Baseis (obviousl...
Convert UTF-8 encoded NSData to NSString
...a: Data {
return Data(utf8)
}
}
extension String {
var base64Decoded: Data? {
return Data(base64Encoded: self)
}
}
Playground
let string = "Hello World" // "Hello World"
let stringData = string.data ...
Finding a branch point with Git?
... two. How can I find the commit in my repository when branch A was created based on master?
22 Answers
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Encrypt Password in Configuration Files? [closed]
...
A simple way of doing this is to use Password Based Encryption in Java. This allows you to encrypt and decrypt a text by using a password.
This basically means initializing a javax.crypto.Cipher with algorithm "AES/CBC/PKCS5Padding" and getting a key from javax.crypto.S...
application/x-www-form-urlencoded or multipart/form-data?
...encoding types in an API context (no browser involved)? This might e.g. be based on:
6 Answers
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Git: Find the most recent common ancestor of two branches
...
You are looking for git merge-base. Usage:
$ git merge-base branch2 branch3
050dc022f3a65bdc78d97e2b1ac9b595a924c3f2
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Why is it impossible to override a getter-only property and add a setter? [closed]
...
Because the writer of Baseclass has explicitly declared that Bar has to be a read-only property. It doesn't make sense for derivations to break this contract and make it read-write.
I'm with Microsoft on this one.
Let's say I'm a new programmer w...
How are virtual functions and vtable implemented?
...taining the virtual function contains a virtual pointer that points to the base address of the virtual table in memory. Whenever there is a virtual function call, the v-table is used to resolve to the function address. An object of the class that contains one or more virtual functions contains a vir...
Application Skeleton to support multiple screens
... for multiple screen.
Android generalises device displays into categories based on two parameters:
Screen size, the physical size of the display (measured diagonally)
Screen density, the physical pixel density of the display (in pixels-per-inch, or ppi)`
To determine screen size & density q...
How to “properly” create a custom object in JavaScript?
... is terrible and serves up some kind of in-between compromise to cover all bases, leaving you very confused. (Probably the author is also confused. JavaScript's object model is very different to most programming languages, and in many places straight-up badly designed.)
Let's start with the prototy...