Tutorial by Examples: p

Removing a Pod

Example Podfile: target 'MyProject' do pod 'AWSS3' pod 'RealmSwift' end and if you wanted to remove RealmSwift, remove that line from your Podfile target 'MyProject' do pod 'AWSS3' end then from the command line run $ pod install and CocoaPods will remove RealmSwift.

cocoapods • Removing a Pod from your Project

Database transactions for mutliple database connection

DatabaseTransactions trait allows databases to rollback all the change during the tests. If you want to rollback multiple databases , you need to set $connectionsToTransact properties use Illuminate\Foundation\Testing\DatabaseMigrations; class ExampleTest extends TestCase { use Databas...

Laravel • Testing

Adding custom user script loaded from app bundle

let configuration = WKWebViewConfiguration() if let path = NSBundle.mainBundle().pathForResource("customUserScript", ofType: "js"), source = try? NSString(contentsOfFile: path, encoding: NSUTF8StringEncoding) as String { let userScript = WKUserScript(source...

iOS • WKWebView

Send messages from JavaScript and Handle them on the native side

Messages can be sent from JavaScript using the following code window.webkit.messageHandlers.{NAME}.postMessage() Here how to create a script message handler to handle the messages: class NotificationScriptMessageHandler: NSObject, WKScriptMessageHandler { func userContentController(userCon...

iOS • WKWebView

Create new file in Google Drive of a certain Mime type

function createGoogleDriveFileOfMimeType() { var content,fileName,newFile;//Declare variable names fileName = "Test File " + new Date().toString().slice(0,15);//Create a new file name with date on end content = "This is the file Content"; newFile = DriveApp.cre...

google-apps-script • DriveApp

Get all folders - put folders into a continuation token - then retrieve from token

function processGoogleDriveFolders() { var arrayAllFolderNames,continuationToken,folders,foldersFromToken,thisFolder;//Declare variable names arrayAllFolderNames = [];//Create an empty array and assign it to this variable name folders = DriveApp.getFolders();//Get all folders from ...

google-apps-script • DriveApp

Get all files - put them into a continuation token - then retrieve them

function processGoogleDriveFiles() { var arrayAllFileNames,continuationToken,files,filesFromToken,fileIterator,thisFile;//Declare variable names arrayAllFileNames = [];//Create an empty array and assign it to this variable name files = DriveApp.getFiles();//Get all files from Googl...

google-apps-script • DriveApp

Get files by file type with matching string in file name

Get all Google Forms with the word "Untitled" in the file name. function mainSearchFunction(searchStr) { var fileInfo,arrayFileIDs,arrayFileNames,arrayOfIndexNumbers, allFileIDsWithStringInName,i,searchStr,thisID;//Declare variables if (!searchStr) { searchStr = &quo...

google-apps-script • DriveApp Service - Files by type and search string

HTML markup

example input: <html> <head> <title>the title</title> <link href='css/app.css' type='text/css' rel='stylesheet'> <script src='js/app.js'></script> </head> <body> <h1>header</h1> <div> &l...

DOM • Getting started with DOM

Select a word without surrounding white space

Suppose we want to select a word without surrounding white spaces, use the text object iw for inner word using visual mode: Got to normal mode by pressing ESC Type viw at the beginning of a word This will select the inner word

vim • Vim Text Objects

Grunt and Gulp

In ASP.NET Core apps, you bundle and minify the client-side resources during design-time using third party tools, such as Gulp and Grunt. By using design-time bundling and minification, the minified files are created prior to the application’s deployment. Bundling and minifying before deployment p...

asp.net-core • Bundling and Minification

Dockerfile + supervisord.conf

To run multiple processes e.g. an Apache web server together with an SSH daemon inside the same container you can use supervisord. Create your supervisord.conf configuration file like: [supervisord] nodaemon=true [program:sshd] command=/usr/sbin/sshd -D [program:apache2] command=/bin/bash...

Docker • Multiple processes in one container instance

Simple usage of TList

var List: TList<Integer>; ... List := TList<Integer>.Create; { Create List } try List.Add(100); { Add Items } List.Add(200); WriteLn(List[1]); { 200 } finally List.Free; end;

Embarcadero Delphi • Generics

Descending from TList making it specific

type TIntegerList = class(TList<Integer>) public function Sum: Integer; end; ... function TIntegerList.Sum: Integer; var Item: Integer; begin Result := 0; for Item in Self do Result := Result + Item; end;

Embarcadero Delphi • Generics

Infix operators and infix notation

Elm allows the definition of custom infix operators. Infix operators are defined using parenthesis around the name of a function. Consider this example of infix operator for construction Tuples 1 => True -- (1, True): (=>) : a -> b -> ( a, b ) (=>) a b = ( a, b ) Most of t...

Elm Language • Functions and Partial Application

Simple MVP Example

To illustrate a simple example usage of the MVP pattern, consider the following code which creates a simple UI with only a button and a label. When the button is clicked, the label updates with the number of times the button has been clicked. We have 5 classes: Model - The POJO to maintain state...

swing • MVP Pattern

Creating a simple data type

The easiest way to create a custom data type in Haskell is to use the data keyword: data Foo = Bar | Biz The name of the type is specified between data and =, and is called a type constructor. After = we specify all value constructors of our data type, delimited by the | sign. There is a rule in...

Haskell Language • Creating Custom Data Types

Creating a data type with value constructor parameters

Value constructors are functions that return a value of a data type. Because of this, just like any other function, they can take one or more parameters: data Foo = Bar String Int | Biz String Let's check the type of the Bar value constructor. :t Bar prints Bar :: String -> Int -> Foo...

Haskell Language • Creating Custom Data Types

Creating a data type with type parameters

Type constructors can take one or more type parameters: data Foo a b = Bar a b | Biz a b Type parameters in Haskell must begin with a lowercase letter. Our custom data type is not a real type yet. In order to create values of our type, we must substitute all type parameters with actual types. Be...

Haskell Language • Creating Custom Data Types

Setting the maximum heap size.

Most JVMs have an option to set the maximum heap size e.g. -Xmx64m -Xmx8g In Java 1.0 to 1.2 you could use -mx64m and this is still available on some JVMs for backward compatibility (E.g. Oracle JVM). There are a few common misconceptions about this setting. It doesn't set the heap size...

jvm • JVM Heap