Tutorial by Examples: ed

www and non-www redirects

Redirect any naked domain to www.[your_domain].tld: # Start Apache Rewriting engine RewriteEngine On # Make sure you're not already using www subdomain # and that the host string is not empty RewriteCond %{HTTP_HOST} !^$ RewriteCond %{HTTP_HOST} !^www\. # We check for http/https connection ...

Hypertext Access file • Rewriting and Redirecting

Pre-defined general entities

XML pre-defines five general entities that can be used without declaring them: & " ' < > They are associated with the names amp, quot, apos, lt and gt. <?xml version="1.0"?> <entities> &amp; is an ampersand. &quot; is a quote. &apos; is...

xml • Entities

User-defined general (internal) entities

It is possible to define one's own general entities. The declaration occurs in the DTD subset, with a name and the associated replacement text. It can then be used in the document using the entity reference syntax &...;, either in text, or in attribute values. <?xml version="1.0"?...

xml • Entities

Creating .jar file with all the dependencies of the project

To create a JAR containing all of its dependencies, it is possible to use the built-in descriptor format jar-with-dependencies. The following example configures an execution of the Assembly Plugin bound to the package phase, using this built-in descriptor and declaring a main class of com.example: ...

Apache Maven • Maven Assembly Plugin

STDIN, STDOUT and STDERR explained

Commands have one input (STDIN) and two kinds of outputs, standard output (STDOUT) and standard error (STDERR). For example: STDIN root@server~# read Type some text here Standard input is used to provide input to a program. (Here we're using the read builtin to read a line from STDIN.) STDO...

Bash • Redirection

Redirecting multiple commands to the same file

{ echo "contents of home directory" ls ~ } > output.txt

Bash • Redirection

Locate and replace data in a column

import pandas as pd df = pd.DataFrame({'gender': ["male", "female","female"], 'id': [1, 2, 3] }) >>> df gender id 0 male 1 1 female 2 2 female 3 To encode the male to 0 and female to 1: df.loc[df["gender&quot...

pandas • Simple manipulation of DataFrames

mediatype

Media queries have an optional mediatype parameter. This parameter is placed directly after the @media declaration (@media mediatype), for example: @media print { html { background-color: white; } } The above CSS code will give the DOM HTML element a white background color wh...

CSS • Media Queries

Using a predicate as a spec

Any predicate function can be used as a spec. Here's a simple example: (clojure.spec/valid? odd? 1) ;;=> true (clojure.spec/valid? odd? 2) ;;=> false the valid? function will take a spec and a value and return true if the value conforms to the spec and false otherwise. One other inte...

clojure • clojure.spec

Delegated Events

Let's start with example. Here is a very simple example HTML. Example HTML <html> <head> </head> <body> <ul> <li> <a href="some_url/">Link 1</a> </li> &l...

jQuery • Events

Advanced custom tags using Node

Sometimes what you want to do is just too complex for a filter or a simple_tag. Fow this you will need to create a compilation function and a renderer. In this example we will create a template tag verbose_name with the following syntax: ExampleDescription{% verbose_name obj %}Verbose name of a mo...

Django • Template Tags and Filters

Protected module entities

As well as allowing module entities to have access control (being public or private) modules entities may also have the protect attribute. A public protected entity may be use associated, but the used entity is subject to restrictions on its use. module mod integer, public, protected :: i=1 en...

Fortran • Usage of Modules

Multiple database connections

Laravel allows user work on multiple database connections. If you need to connect to multiple databases and make them work together, you are beware of the connection setup. You also allow using different types of database in the same application if you required. Default connection In config/dat...

Laravel • Database

SortedSet

// create an empty set var mySet = new SortedSet<int>(); // add something // note that we add 2 before we add 1 mySet.Add(2); mySet.Add(1); // enumerate through the set foreach(var item in mySet) { Console.WriteLine(item); } // output: // 1 // 2

C# Language • An overview of c# collections

Supporting Multiple Domains

Each domain supported in the app needs to make available its own apple-app-site-association file. If the content served by each domain is different, then the contents of the file will also change to support the respective paths. Otherwise, the same file can be used, but it needs to be accessible at ...

iOS • Universal Links

Enable displaying of error reporting

In Index page change the following: error_reporting(E_ALL | E_STRICT); to error_reporting(E_ALL); Set $_SERVER['MAGE_IS_DEVELOPER_MODE'] = true and uncomment this line (remove the #) #ini_set('display_errors', 1); You can also Set Dev Mode using SetEnv in your .htaccess file To make th...

magento • Magento error handling, messages and reports

Perform an Action when a Dialog Box is Closed

SP.SOD.executeOrDelayUntilScriptLoaded(showDialog,"sp.js"); function showDialog(){ var options = SP.UI.$create_DialogOptions(); options.url = "/mySite/lists/myList/NewForm.aspx"; options.dialogReturnValueCallback = myCallBackFunction; SP.UI.ModalDialog.show...

sharepoint • Working with Modal Dialog Boxes with JavaScript

Derived type definition

Fortran 2003 introduced support for object oriented programming. This feature allows to take advantage of modern programming techniques. Derived types are defined with the following form: TYPE [[, attr-list] :: ] name [(name-list)] [def-stmts] [PRIVATE statement or SEQUENCE statement]. . . ...

Fortran • Object Oriented Programming

Type Procedures

In order to obtain class-like behavior, type and related procedures (subroutine and functions) shall be placed in a module: Example: module MShape implicit none private type, public :: Shape private integer :: radius contains procedure :: set => sh...

Fortran • Object Oriented Programming

Strongly Typed GridView

Starting with Asp.net 4.5 web controls can take advantage from strongly-typed binding to get IntelliSense support and compiletime errors. Create a class, which holds your model: public class Album { public int Id { get; set; } public string Name { get; set; } public string Artist {...

ASP.NET • GridView