Tutorial by Examples: ga

Enable pipelines in your settings.py ITEM_PIPELINES = { 'project_folder.pipelines.MyPipeline': 100 } Then write this code in items.py # -*- coding: utf-8 -*- from scrapy import Item, Field from collections import OrderedDict class DynamicItem(Item): def __setitem__(self, key, v...

There may be multiple reason why you want to create a text file in batch. But whatever the reason may be, this is how you do it. If you want to overwrite an existing text file use >. Example: @echo off echo info to save > text.txt But if you want to append text to an already existing t...

This example shows a very basic example of how to utilize onCommand. I don't suggest processing your commands directly in onCommand, but this does the trick for this simple case. In this example we attempt to set the player's gamemode. The first thing we need to do is make sure that the sender isn...

{-# LANGUAGE RecordWildCards #-} import Text.XML.Light data Package = Package { pOrderNo :: String , pOrderPos :: String , pBarcode :: String , pNumber :: String } -- | Create XML from a Package instance Node Package where node qn Package {..} = node qn [ un...

A static data member of the class may be fully defined within the class definition if it is declared inline. For example, the following class may be defined in a header. Prior to C++17, it would have been necessary to provide a .cpp file to contain the definition of Foo::num_instances so that it wou...

A C library header can usually be included into a C++ program, since most declarations are valid in both C and C++. For example, consider the following foo.h: typedef struct Foo { int bar; } Foo; Foo make_foo(int); The definition of make_foo is separately compiled and distributed with the...

let col_1 = db.collection('col_1'); let col_2 = db.collection('col_2'); col_1 .aggregate([ { $match: { "_id": 1 } }, { $lookup: { from: "col_2", localField: "id", foreignField: "id", ...

Users often turn up in a situation when a business process cannot be finished because the user has not entered all the necessary information. An example of this situation is when a user tries to create a drop-ship order with missing customer address. According to UX best practices, the system shou...

NPM If external library like jQuery is installed using NPM npm install --save jquery Add script path into your angular-cli.json "scripts": [ "../node_modules/jquery/dist/jquery.js" ] Assets Folder You can also save the library file in your assets/js directory and in...

Install cordova using the following command npm install -g cordova. Use cordova -version to check the cordova version. Set path variables ANDROID_HOME and JAVA_HOME. Example: export ANDROID_HOME = /home/geethu/android-sdk-linux export PATH = $PATH:$ANDROID_HOME/tools:$ANDROID_H...

To create a new project ng new [project-name] which initializes git.Install packages for tooling via npm. It creates the project successfully. cd [project-name] and execute either npm start or ng serve It'll run the server in the given default port. Application will refresh according to the chan...

We injecting the module in the application var Registration=angular.module("myApp",["ngRoute"]); now we use $routeProvider from "ngRoute" Registration.config(function($routeProvider) { }); finally we integrating the route, we define "/ad...

import time def timer(func): def inner(*args, **kwargs): t1 = time.time() f = func(*args, **kwargs) t2 = time.time() print 'Runtime took {0} seconds'.format(t2-t1) return f return inner @timer def example_function(): #do stuff exa...

Using Oracle SQL’s NVL2() function, you can create a display column which contains one value if a field contains data and another value if a field does not contain data. For example, in an Entity search, turn the presence of a primary e-mail address into a text display column: NVL2( {email} , 'YES...

Once we have an image ready, we can start and serve the same. In order to create a container from the image, use docker run -p 80:80 -d <Image name> In the command above -p 80:80 would forward port 80 of your server to port 80 of the container. The flag -d tells that the container should r...

<http:listener-config name="HTTP_Listener_Configuration" host="localhost" port="${http.port}" doc:name="HTTP Listener Configuration"/> <db:mysql-config name="MySQL_Configuration" host="${db.host}" port="${db.port}"...

Application visits are initiated by clicking a Turbolinks-enabled link, or programmatically by calling Turbolinks.visit(location) By default, the visit function uses the 'advance' action. More understandably, the default behavior for the visit function is to advance to the page indicated by the ...

Textures for this example are available at: http://planetpixelemporium.com/planets.html Installation or Setup You can install three via npm npm install three Or add it as a script to your HTML page <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/th...

Run the following command one by one: npm install -g vulcanize crisper Use Vulcanize: Crunches all the HTML import files into a single file Crisper: Extracts inline js to its own file Note: Ubuntu users may need to prefix the above command with sudo.

In stable Rust you create a Box by using the Box::new function. let boxed_int: Box<i32> = Box::new(1);