java eclipse indexOf question

I would like to know how it working. Here is the question.. isnt it put the method Iterable positions();?
Please help me to figure it out.

Suppose we want to extend the PositionalList ADT with a method, indexOf(p), that returns the current index of the element stored at position p. Write this method using only other methods of the PositionalList interface (not details of our LinkedPositionalList implementation). Write the necessary code to test the method. Hint: Count the steps while traversing the list until encountering position p

public interface PositionalList<E> extends Iterable<E> {


int size();

boolean isEmpty();

Position<E> first();

Position<E> last();

Position<E> before(Position<E> p) throws IllegalArgumentException;

Position<E> after(Position<E> p) throws IllegalArgumentException;

Position<E> addFirst(E e);

Position<E> addLast(E e);

Position<E> addBefore(Position<E> p, E e)
throws IllegalArgumentException;

Position<E> addAfter(Position<E> p, E e)
throws IllegalArgumentException;

E set(Position<E> p, E e) throws IllegalArgumentException;

E remove(Position<E> p) throws IllegalArgumentException;

Iterator<E> iterator();

Iterable<Position<E>> positions();

}

java indexOf question

I would like to know how it working. Here is the question.. isnt it put the method Iterable positions();?
Please help me to figure it out.

Suppose we want to extend the PositionalList ADT with a method, indexOf(p), that returns the current index of the element stored at position p. Write this method using only other methods of the PositionalList interface (not details of our LinkedPositionalList implementation). Write the necessary code to test the method. Hint: Count the steps while traversing the list until encountering position p

public interface PositionalList<E> extends Iterable<E> {

int size();

boolean isEmpty();

Position<E> first();

Position<E> last();

Position<E> before(Position<E> p) throws IllegalArgumentException;

Position<E> after(Position<E> p) throws IllegalArgumentException;

Position<E> addFirst(E e);

Position<E> addLast(E e);

Position<E> addBefore(Position<E> p, E e)
throws IllegalArgumentException;
Position<E> addAfter(Position<E> p, E e)
throws IllegalArgumentException;

E set(Position<E> p, E e) throws IllegalArgumentException;

E remove(Position<E> p) throws IllegalArgumentException;

Iterator<E> iterator();
Iterable<Position<E>> positions();

}

Gutenberg Block Manager Plugin Enables Global Block Removal and Recategorization

The world of Gutenberg blocks is expanding. WordPress’ official block directory launched in June 2020 with just 60 single-block plugins. Today, it has grown to more than 480 blocks. As users incorporate more blocks into their websites, the block inserter can become a very long list to scroll when browsing.

Block management capabilities were added to Gutenberg in version 5.3, released in 2019. It allows users to search for a block and turn individual blocks and sections on or off in the block inserter. The feature hasn’t changed much over the past two years but will soon be getting a major update that will relocate it to the Preferences modal and redesign it to use panels with support for toggling block variations on and off.

If you need more fine-grained block management, Darren Cooney‘s Gutenberg Block Manager plugin offers an admin interface for removing and recategorizing blocks. It is different from the core capabilities in that site admins can globally manage the enabled/disabled state of each block and changes will be reflected in the block inserter for all users. The plugin provides a full-screen interface for managing blocks on its own settings page outside of the editor.

Each block has a description and a toggle button for disabling it. There is enough space to include the number of instances for each block, and this seems like something useful the plugin could add in the future. Block categories are available as a quick navigation list in the sidebar and entire categories can be turned on or off with one click.

The latest version of the plugin adds Category Switcher support for all blocks, including core Gutenberg blocks. Changing a block’s category will update its location in the block inserter.

This plugin could be useful for periodically tidying up, improving the organization of blocks within the block inserter. Paring back the list of available blocks could also make it easier for website managers to have access to only the blocks that are necessary for their work. The plugin includes a filter for controlling the status of blocks across multiple WordPress environments.

After testing the Gutenberg Block Manager, my only criticism is that the plugin’s name is the same as the core WordPress feature, making it somewhat confusing. It might be more clear to focus on its distinctions and include that in the name, such as “Global Block Manager” or some variation. Other than that, it functions just as advertised and is available for free in the official plugins directory.

Generate Dependent Drop List in Spreadsheet Using Go Language

Excelize is a library written in pure Go providing a set of functions that allow you to write to and read from XLSX / XLSM / XLTM files. Supports reading and writing spreadsheet documents generated by Microsoft Excel™ 2007 and later. Supports complex components by high compatibility, and provided streaming API for generating or reading data from a worksheet with huge amounts of data. This library needs Go version 1.10 or later.

Create dependent drop list in the spreadsheet with Excelize using Go like this:

How Gradle is Built: CI From the Trenches #5 [Video]

How is a popular build system like Gradle built? How many people are working on it? What programming languages do they use?

How do they handle pull-request-based development? How do they make sure Gradle runs on a variety of operating systems and JDK versions? What is the difference between Gradle and Gradle Enterprise?

Achieving Multi-Tenancy on Data Analytics With Cumul.io and Auth0

Often, companies will have a data analytics tool to follow up on various metrics such as ARR, KPI, or internal statistics on performance,  or they want to offer these types of insights to their clients or platform users. And the list can go on! And in many cases, you get into a situation where you want to make sure anyone accessing our data analytics tools can only see data that they should be allowed to see or data that's only related to themselves. This is where multi-tenancy comes in. In this tutorial, we will walk through how to configure your Cumul.io dashboard with multi-tenancy based on user information on login, which we manage with Auth0. Before we dive into the specifics, let me give you some context on what these two platforms are used for; 

Cumul.io: SaaS that allows you to create your own data insight and analytics dashboards that you can easily integrate and embed within your own platform.

Introduction to Mulesoft Anypoint Studio.

Introduction

 

While we have a lot of blogs for various complex Integration scenarios and methods using MuleSoft, a few of my friends asked me to write something more basic, step-by-step process to get started with the MuleSoft Anypoint Studio and start integration using this amazing tool.

Silly Kubectl Trick #5: Waiting for Kubernetes

When you deploy stuff for a living, you find yourself waiting around, a lot.  Wait for Terraform to spin up the AWS VPCs.  Wait for the Kubernetes cluster node VMs to boot.  Wait for the Kubernetes cluster to coalesce.  Wait for the CNI pods, DNS pods, and kube-proxy bits to be happy.  Wait, wait, wait.

kubectl feels your pain there, and has some nifty ways of helping you wait (or not!) for the things you deploy or delete to coalesce.

AMP: An Amazing Web Component Framework

What Is AMP Development?

Accelerated Mobile Pages were launched by Google to ensure that mobile web pages operate at optimal speed. It also promises additional visibility on Google result pages. 

AMP is an open-source HTML framework that helps to create web pages and ads that are consistently fast and high-performing across devices and distribution platforms. In the search results, web pages built on AMP display a lightning bolt icon.

Omnichannel Retail and Customer 360 With Apache Kafka

Event Streaming with Apache Kafka disrupts the retail industry. Walmart's real-time inventory system and Target's omnichannel distribution and logistics are two great examples. This blog post explores a key use case for postmodern retail companies: Real-time omnichannel retail and customer 360 with data in motion.

Disruption of the Retail Industry with Apache Kafka

Various deployments across the globe leverage event streaming with Apache Kafka for very different use cases. Consequently, Kafka is the right choice, whether you need to optimize the supply chain, disrupt the market with innovative business models, or build a context-specific customer experience.

Choosing the Best Technology Stack for Web Application Development

The market demand for web applications is rapidly increasing. It is important to consider several factors when building these platforms. Perhaps most important for web application development is choosing the right technology stack.

The technologies users choose to use will affect both the quality and performance of the created software. Many tools and frameworks have been introduced in the market, and each provides different boosts to the productivity and performance of these developed applications.

Google Introduces Flutter 2.0

Flutter is a renowned and prominent platform that has grabbed massive recognition from big developing companies worldwide like eBay motors, Alibaba (eCommerce), Hamilton Musical (Entertainment) have by the time-released their apps. They’ve achieved this due to its impressive simplicity and ease to use U.I. compared to the other web developing applications and speed with other alternative applications.

Nowadays, creating any type of application in this era is not extremely difficult. Although it is necessary to know the required programming and development knowledge, many development mediums allow us to develop applications.

10 Popular APIs for Words

With all the changes in technology in the last half century, a main form of communication remains relevant: the written or spoken word. Words are powerful, dramatic, inspiring, expressive, meaningful, and a very important part of our society.

Diving into DevSecOps w/ John Willis

DevSecOps is one of those buzzwords that can mean a lot of things or nothing at all. But where DevOps helped us gain a more holistic understanding of our delivery pipeline, DevSecOps does the same for our security efforts. Over the next two episodes of Dev Interrupted I explore what DevSecOps actually means to dev teams with John Willis.

Part 1



Chatbot for Customer Support

These days there are many use cases for conversational AI. Conversational AI refers to the use of messaging apps, speech-based assistants, and chatbots to automate communication and create personalized customer experiences at scale. In this article, you will learn about the chatbot.

In the following project, we go through implementing a chatbot using Java and Apache OpenNLP.

The Advantages of Cloud Computing

Cloud computing is the distribution of various services via the Internet. These services may include applications and tools such as web servers, data storage, database, email services, and other internet applications. Rather than storing documents on a local computer or external storage device, cloud-hosted storage allows you to store them on a remote server. There are several advantages of using cloud computing.

There are two main types of cloud services: infrastructure-as-a-service (IaaS) and application-as-a-service (SaaS). IaaS is dedicated software that runs on virtual machines; it includes application programming interfaces (APIs) and a collection of servers that host the software. AAAS is a collection of hosted services that can be accessed over the internet. For instance, some cloud computing companies offer data storage and document management as part of a monthly service plan.

Get a Jump Into GitHub Actions

On January 27, 2021, Angie Jones of Applitools hosted Brian Douglas, aka "bdougie", a Staff Developer Advocate at GitHub, for a webinar to help you jump into GitHub Actions. You can watch the entire webinar on YouTube. This article goes through the highlights for you.

Introduction

Brian Douglas and Angie Jones infographic.

Angie Jones serves as Senior Director of Test Automation University and as Principal Developer Advocate at Applitools. She tweets at @techgirl1908, and her website here

Thunderhead Speeds Quality Delivery With Applitools

Thunderhead is the recognized global leader in the Customer Journey Orchestration and Analytics market. The ONE Engagement Hub helps global brands build customer engagement in the era of digital transformation.

Thunderhead provides its users with great insights into customer behavior. To continue to improve user experience with their highly-visual web application, Thunderhead develops continuously. How does Thunderhead keep this visual user experience working well? A key component is Applitools.