Tutorial by Examples: p

Page Objects are similar to Custom Commands; except they are collections of custom commands that are associated with a specific UI component. This works extremely well with modern component based design, such as in React. module.exports = { url: 'http://localhost:3000/login', commands: [{ ...
Suppose we have container "CustomersContainer" which connects a "Customers" dumb component to the Redux store. In index.js: import { Component }, React from 'react'; import { render } from 'react-dom'; import { Provider } from 'react-redux'; import { createStore } from 'redu...
What and Why ? Asp.Net’s Web API2 is the latest version of Web API. It is an easy way to implement a RESTful web service using all of the goodness that the Asp.Net framework provides. Once you understand the basic principles of REST, then a Asp.net Web API2 will be very easy to implement. Web API2...
In [1]: import pandas as pd In [2]: df = pd.DataFrame(columns = ['A', 'B', 'C']) In [3]: df Out[3]: Empty DataFrame Columns: [A, B, C] Index: [] Appending a row by a single column value: In [4]: df.loc[0, 'A'] = 1 In [5]: df Out[5]: A B C 0 1 NaN NaN Appending a ...
1 cd my/project/dir 2 git clone git://github.com/zendframework/ZendSkeletonApplication.git 3 cd ZendSkeletonApplication 4 php composer.phar self-update 5 php composer.phar install
We install OpenCV 3.1.0 on Windows and get started. There are two ways to install OpenCV on windows. One is to download the installer and run it. Other is to build from source. This is the easiest way to install OpenCV and get started. OpenCV gives pre-build binaries to install on Windows here. Aft...
To get products from the database, you need to use Magento 2's repository design pattern. Each module can be bundled with it's own repositories, and the Product Catalog module is not any different. You can use dependency injection in your class to access the repository. A working example would look...
In this example we use a parameter in the route to specify the page number. We set a default of 1 in the function parameter page=1. We have a User object in the database and we query it, ordering in descending order, showing latest users first. We then use the paginate method of the query object in ...
Here we use the object that we passed to render_template to display the pages, the current active page, and also a previous and next buttons if you can go to the previous/next page. <!-- previous page --> {% if users_list.has_prev %} <li> <a href="{{ url_for('users', page...
This example shows how to retrieve an ID of a newly created item using SharePoint REST API. Note : listName - This variable contains name of you list. newItemBody - This will be your request body for adding new item in list. e.g. var newItemBody = { __metadata: { 'type': 'SP.Data.MyListNameIte...
First, we need a custom endpoint builder. public class WSConfigurator extends ServerEndpointConfig.Configurator { @Inject private static Injector injector; @Override public <T> T getEndpointInstance(Class<T> endpointClass) throws InstantiationException { ...
String jsonStr = "{\"name\" : \"Abcd\", \"greeting\": \"Hello\", }"; //Sample Json String Gson gson = new Gson(); // Creates new instance of Gson JsonElement element = gson.fromJson (jsonStr, JsonElement.class); //Converts the json string to Json...
This example applies to maven projects. Add the jetty-maven-plugin to build element as below. <build> <plugins> <plugin> <groupId>org.eclipse.jetty</groupId> <artifactId>jetty-maven-plugin</artifactId> <version&g...
To update multiple documents in a collection, set the multi option to true. db.collection.update( query, update, { upsert: boolean, multi: boolean, writeConcern: document } ) multi is optional. If set to true, updates multiple documents that meet the query crit...
You have to add a div with the class .row-height inside the row, and also add .col-height to the columns. If you want to restrict the effect to a certain media query, just use the responsive .row-height and .col-height classes: for example .row-sm-height with .col-sm-height. CSS version: .row-heig...
I find that the examples in the docker inspect documentation seem magic, but do not explain much. Docker inspect is important because it is the clean way to extract information from a running container docker inspect -f ... container_id (or all running container) docker inspect -f ... $(docker p...
import numpy as np #There is a lot of math in neurons, so use numpy to speed things up in python; in other languages, use an efficient array type for that language import random #Initial neuron weights should be random class Neuron: def __init__(self, nbr_inputs, weight_array = None): ...
Suppose you are searching for a Title Case pattern in a large text file and you want to edit a incorrect regular expression: First, go into Ex mode by typing q: You will now see all the commands that you typed in commandline mode, press j to go the regular expression you want to edit (/\v[A-Z]\w...
public ActionResult Details( string product) { .... if (productNotFound) { // http://www.eidias.com/blog/2014/7/2/mvc-custom-error-pages Response.Clear(); Response.TrySkipIisCustomErrors = true; Response.Write(product + " product not exists"); ...
Consider a one to one bidirectional relationship between employee and desk. Employee.java @Entity public class Employee { @TableGenerator(name = "employee_gen", table = "id_gen", pkColumnName = "gen_name", valueColumnName = "gen_val", allocationSize...

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