It redeclares a member that is not overridable. Only calls to the instance will be affected. Code inside the base classes will not be affected by this.
Public Class Person
Public Sub DoSomething()
Console.WriteLine("Person")
End Sub
Public Sub UseMe()
...
In C, character constants and string literals are different things.
A character surrounded by single quotes like 'a' is a character constant. A character constant is an integer whose value is the character code that stands for the character. How to interpret character constants with multiple charac...
When you need to pass some data from the parent task to its children tasks, so it logically flows with the execution, use AsyncLocal class:
void Main()
{
AsyncLocal<string> user = new AsyncLocal<string>();
user.Value = "initial user";
// this does not aff...
It is unlikely for a developer to not come across a deprecated API during a development process. A deprecated program element is one that programmers are discouraged from using, typically because it is dangerous, or because a better alternative exists. Compilers and analyzers (like LINT) warn when a...
Example below shows how to create a BroadcastReceiver which is able to receive BOOT_COMPLETED events. This way, you are able to start a Service or start an Activity as soon device was powered up.
Also, you can use BOOT_COMPLETED events to restore your alarms since they are destroyed when device is ...
In cryptography, encryption is the process of encoding messages or information in such a way that only authorized parties can access it.
Source: Encryption - Wikipedia
Intuition
The categorical product of two types A and B should contain the minimal information necessary to contain inside an instance of type A or type B. We can see now that the intuitive coproduct of two types should be Either a b. Other candidates, such as Either a (b,Bool), would contain a part...
Chaining and Chainable is a design methodology used to design object behaviors so that calls to object functions return references to self, or another object, providing access to additional function calls allowing the calling statement to chain together many calls without the need to reference the v...
Here we have a simple class to be tested that returns a Promise based on the results of an external ResponseProcessor that takes time to execute.
For simplicty we'll assume that the processResponse method won't ever fail.
import {processResponse} from '../utils/response_processor';
const ping =...
For multiple quotechars use regex in place of sep:
df = pd.read_csv(log_file,
sep=r'\s(?=(?:[^"]*"[^"]*")*[^"]*$)(?![^\[]*\])',
engine='python',
usecols=[0, 3, 4, 5, 6, 7, 8],
names=['ip', 'time', 'request', 'statu...
Here is a class (Dog) creating its own dependency (Food):
class Dog {
public Dog() {
var food = new Food();
this.eat(food);
}
}
Here is the same class being injected with its dependency using constructor injection:
class Dog {
public Dog(Food food) {
...
Once your project has been created, you can launch the app by typing
$ sails lift
By default, you can access the app in the browser on port 1337. The URL with the port is shown in the terminal.
Another way to start the Sails app is with the node command:
$ node app.js
However, you lose some...
In performing parsing, before starting, the grammar for the language needs to be specified. A source of tokens is also needed for the parser.
The parser could be hand-written code, or a parser generator tool could be used. If a parser generator tool is used, then that tool will need to be downloade...
This is an example for how to handle dynamic key for response. Here A and B are dynamic keys it can be anything
Response
{
"response": [
{
"A": [
{
"name": "Tango"
},
{
"name": "P...
Some common operations in MATLAB, like differentiation or integration, output results that have a different amount of elements than the input data has. This fact can easily be overlooked, which would usually cause errors like Matrix dimensions must agree. Consider the following example:
t = 0:0.1:1...
You can use the $q.all function to call a .then method after an array of promises has been successfully resolved and fetch the data they resolved with.
Example:
JS:
$scope.data = []
$q.all([
$http.get("data.json"),
$http.get("more-data.json"),
]).then(funct...
It is not possible to directly use static_cast, const_cast, dynamic_cast and reinterpret_cast on std::shared_ptr to retrieve a pointer sharing ownership with the pointer being passed as argument. Instead, the functions std::static_pointer_cast, std::const_pointer_cast, std::dynamic_pointer_cast and ...
A shallow copy is a copy of a collection without performing a copy of its elements.
>>> import copy
>>> c = [[1,2]]
>>> d = copy.copy(c)
>>> c is d
False
>>> c[0] is d[0]
True
You can create shallow copies of lists using slices.
>>> l1 = [1,2,3]
>>> l2 = l1[:] # Perform the shallow copy.
>>> l2
[1,2,3]
>>> l1 is l2
False
