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Linked List in C- Print Linked List in Reverse Order using Recursion

DATA STRUCTURES IN C – LINKED LIST (20 PROGRAMS) Try DATA STRUCTURES IN C – LINKED LIST (20 PROGRAMS) Linked List in C- Print Linked List in Reverse Order using Recursion : Source Code : #include<stdio.h> struct node *head=NULL; //Pointer to store the staring node of the linked list //Always stores the address location of first… Read More »

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“Active Record::Connection Not Established” Error in Ruby on Rails (ROR) when Connecting to MYSQL Server – Solution

      I got this error “ActiveRecord::ConnectionNotEstablished” while using Ruby on Rails with MYSQL initially. The error means that the Rails framework is not able to connect to MYSQL server. The problem is that the root(MYSQL) user was not able to connect to MYSQL through Rails. So to solve this issue, login as root in… Read More »

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Enable CORS to Send Cross Domain Request to Elasticsearch using AJAX

           I faced this issue when I used my web application to send AJAX request to get data from Elasticsearch. The web application was deployed in Apache Tomcat (port 8080 was used). XMLHttpRequest cannot load http://localhost:9200/. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8080' is therefore not allowed… Read More »

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SpaceTop – An Interactive 2D & 3D Computer

            SpaceTop is a technology and design to make 2D and 3D spacial interaction in a desktop computer. While a traditional desktop uses a keyboard and a mouse for interaction, SpaceTop uses a completely redefined display setup and visualization for seamless 2D and 3D interaction on the objects on the… Read More »

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Writing REST APIs – CRUD – Request & Response – Best Practices – Part I

I am going to publish a series of posts  related to REST APIs standards and today we will see some details on designing the request and response for an API. So now we will assume we are going to write an API for user managements and we call this User API. When writing an API, the following… Read More »

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