Tutorial by Examples: r

Add a folder to the root drive

function DriveAppAddFolder(child) {//Adds file to the root drive in Google Drive var body,returnedFolder;//Declare variable names if (!child) { body = "There is no folder"; MailApp.sendEmail(Session.getEffectiveUser().getEmail(), "", "Error Adding Folder!&q...

google-apps-script • DriveApp

Create a new text file and add it to the root folder

function DriveAppAddFile(child) {//Adds file to the root drive in Google Drive var body,returnedFolder;//Declare variable names if (!child) { body = "There is no file"; MailApp.sendEmail(Session.getEffectiveUser().getEmail(), "", "Error Adding File!",...

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

Flyweight Factory (C#)

In simple words: A Flyweight factory that for a given, already known, key will always give the same object as response. For new keys will create the instance and return it. Using the factory: ISomeFactory<string, object> factory = new FlyweightFactory<string, object>(); var result1...

Design patterns • Factory

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

Bundler and Minifier Extension

Visual Studio also features an available Bundler and Minifier Extension that is capable of handling this process for you. The extension allows you to easily select and bundle the files you need without writing a line of code. Building Your Bundles After installing the extension, you select all of ...

asp.net-core • Bundling and Minification

Basic Assertion

At its most basic level, Unit Testing in any language provides assertions against some known or expected output. function assert( outcome, description ) { var passFail = outcome ? 'pass' : 'fail'; console.log(passFail, ': ', description); return outcome; }; The popular assertio...

JavaScript • Unit Testing Javascript

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

Sort a dynamic array via generic TArray.Sort

uses System.Generics.Collections, { TArray } System.Generics.Defaults; { TComparer<T> } var StringArray: TArray<string>; { Also works with "array of string" } ... { Sorts the array case insensitive } TArray.Sort<string>(StringArray, TComparer<string>...

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

Creating models

Backbone models describe how data is stored using JavaScript objects. Each model is a hash of fields called attributes and the behaviour of the model including validation is described by options. A model of Todo item in a TodoApp would be var ToDo = Backbone.Model.extend({ defaults: { assi...

backbone.js • Model

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

Mappings for exiting Insert mode

A lot of Vim users find the Esc too hard to reach, and end up finding another mapping that's easy to reach from the home row. Note that Ctrl-[ may be equivalent to Esc on an English keyboard, and is much easier to reach. jk inoremap jk <ESC> This one is really easy to trigger; just smash...

vim • Tips and tricks to boost productivity

Match an IP Address

IPv4 To match IPv4 address format, you need to check for numbers [0-9]{1,3} three times {3} separated by periods \. and ending with another number. ^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$ This regular expression is too simple - if you want to it to be accurate, you need to check that the numbers are be...

Regular Expressions • Useful Regex Showcase

To get old table structure using div

This is the normal HTML table structure <style> table { width: 100%; } </style> <table> <tr> <td> I'm a table </td> </tr> </table> You can do same implementation like this <style> .table-...

CSS • Layout Control