Tutorial by Topics: o

The filename AssemblyInfo.cs is used by convention as the source file where developers place metadata attributes that describe the entire assembly they are building.
Manages files. new System.IO.StreamWriter(string path) new System.IO.StreamWriter(string path, bool append) System.IO.StreamWriter.WriteLine(string text) System.IO.StreamWriter.WriteAsync(string text) System.IO.Stream.Close() System.IO.File.ReadAllText(string path) System.IO.File.ReadAll...
There is NO switch statement in python as a language design choice. There has been a PEP (PEP-3103) covering the topic that has been rejected. You can find many list of recipes on how to do your own switch statements in python, and here I'm trying to suggest the most sensible options. Here are a ...
ENV[variable_name] ENV.fetch(variable_name, default_value) Let get user profile path in a dynamic way for scripting under windows
singleton_class = class << object; self end Singleton classes only have one instance: their corresponding object. This can be verified by querying Ruby's ObjectSpace: instances = ObjectSpace.each_object object.singleton_class instances.count # => 1 instances.include...
Subscriptions are means to listen to inputs. Incoming ports, keyboard or mouse events, WebSocket messages, geolocation and page visibility changes, all can serve as inputs.
Firebase Storage provides secure file uploads and downloads for your Firebase apps, regardless of network quality. You can use it to store images, audio, video, or other user-generated content. Firebase Storage is backed by Google Cloud Storage, a powerful, simple, and cost-effective object storag...
@inject<NameOfService><Identifier> @<Identifier>.Foo() @inject <type> <name>
public function map(Router $router) // Define the routes for the application. protected function mapWebRoutes(Router $router) // Define the "web" routes for the application. ParameterHeaderRouter $router\Illuminate\Routing\Router $router Middleware means that every call to a ro...
PUSHD [path] POPD ParameterDetailspathThe directory to navigate to Using pushd without parameters will print the stack. The popd command will overwrite the current Current Directory value.
Don't use DISTINCT and GROUP BY in the same SELECT. Don't paginate via OFFSET, "remember where you left off". WHERE (a,b) = (22,33) does not optimize at all. Explicitly say ALL or DISTINCT after UNION -- it reminds you pick between the faster ALL or the slower DISTINCT. ...

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