Author Archives: Ajitesh Kumar
AngularJS – How to Use AngularJS with Legacy UI Code?
This article represents tips on how to use AngularJS with legacy UI code which could present challenges such as those described later in this article. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are some of the key points described later in this article: Is it that easy to create Angular apps in Legacy UI? Can I use AngularJS with existing forms? Is it OK to use Angular with JQuery-based UIs? Browser compatibility, especially, for IE-sensitive applications Is it that easy to create Angular apps with Legacy UI Code? Yes, it is! All you need to do is …
Code Quality – Why Avoid Higher Cyclomatic Complexity?
This article represents my thoughts on why one should avoid a higher cyclomatic complexity (value more than 15 or so). Recently, I have been doing code reviews for multiple projects using Sonar. This is where I came across the rule called as “Cyclomatic Complexity”. The rule raises an alert for all the methods whose cyclomatic complexity is found to be more than 10. Thus, I thought of listing down reasons why one should pay attention to the cyclomatic complexity of method when he/she is writing fresh method or making changes to existing method. Personally, I do agree and strongly believe that one should avoid writing methods/function of code complexity higher than 15 or …
Template – HTML5 BoilerPlate with Spring MVC & GAE
This article provides instructions on how to create your quick Google App Engine (GAE) based web application project using Eclipse IDE, based on Spring MVC and HTML5Boilerplate (or Initializr) HTML project templates. Note that this is my personal way to get started quickly with any GAE-based web projects within 5 minutes or so and upload the same on Google cloud. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are key points described later in this article: Create HTML template projects using Initializr Create Google App Engine/Spring MVC template project Create Google Web Application project & Import Files …
How Can I Become A Data Scientist?
This article represents thoughts, primarily, on how to become a data scientist. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are the key points related with different aspects of data scientist, that are described later in this article: Key skills of a data scientist Key roles & responsibilities of a data scientist What would it take me to become a data scientist? What would I create as a Data Scientist? Key Skills of a Data Scientist Mathematics & Statistics Knowledge: A data scientist would do a great job if he/she has a strong mathematics and statistical background. …
Big Data – How to Get Started with Data Science
This article represents my opinion on what would it take to get started with Data Science. As I started exploring Big Data, one thing that became clear is that I may not be successful with Big Data unless I have learnt and applied Data Science to make sense out of Big Data (the data with 3Vs: Volume, Velocity, Variety). This is where I started to find out on How to Get Started with Data Science. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are the key points described later in this article: Data Science is NOT Easy …
Big Data – Top 8 Use Cases for Beginners
This article represents top 8 Big Data use cases that beginners could get started with, and create one or more proof-of-concept (POC) projects around these use cases. I compiled the list after digging enough at various places on web, videos, webinar etc. Different use cases mentioned below are only briefly discussed and each of them shall be explained later in separate articles. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are use cases are described later in this article: Social sentiment analysis Customer interaction analysis Pattern matching Publicly available data analysis Web pages data analysis Clinical data …
Java – 4 Security Vulnerabilities Related Coding Practices to Avoid
This article represents top 4 security vulnerabilities related coding practice to avoid while you are programming with Java language. Recently, I came across few Java projects where these instances were found. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are the key points described later in this article: Executing a dynamically generated SQL statement Directly writing an Http Parameter to Servlet output Creating an SQL PreparedStatement from dynamic string Array is stored directly Executing a Dynamically Generated SQL Statement This is most common of all. One can find mention of this vulenrability at several places. As a …
BPM – Key Aspects of Process Discovery Phase
This article represents different aspects of process discovery phase which is key to any business process implmentation project. The analogy to process discovery phase in regular software project is “requirements gathering phase”. However, it requires different approach than regular software requirements gathering phase owing to the very complexity of business process. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are the key points described later in this article: Different aspects of process discovery Key Deliverables Key Stakeholders Effort & time involved Different aspects of process discovery Following are key phase of process discovery that a …
AngularJS – Recommended Directory Structure for Angular Apps
This article represents the recommended folder structure that you would want to create/adopt for your next Angular App. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are the key aspects of organizing your angularJS app files into the recommended folder structure described and displayed later in this article: Identify key Angularjs elements (files/folders):Following are key elements of AngularJS that need to be stored in form of files within different folders: Core Module: Core module representing the Angular app Components:Components such as following that are used in the core module: Services Filters Directives Important point to note is …
Java – Top 5 Exception Handling Coding Practices to Avoid
This article represents top 5 coding practices related with Java exception handling that you may want to watch out for or better say, avoid, while doing coding for exception handling. Recently, I have been involved with code review of multiple Java projects and found following as most commonly seen coding instances across various Java projects. As a matter of fact, I recently ran sonar code analysis on Spring Core project (Spring Framework) and found the below mentioned instances related with exception handling. Please note that these are suggested to be avoided as a general coding practice and do not mean that they can not be used at all. There are …
AngularJS – 10 Best Practices to Create Custom Directives
This article represents top 10 best practices that one may want to apply while creating custom directives. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following is listed the best practices for creating custom directives: Naming Convention: Prefer using two or three letter prefix (except ng) while naming directives to avoid collision with future HTML releases. Using “ng” as prefix might collide with AngularJS OOTB directives in future. Directive Definition Object (DDO): Prefer returning DDO rather than a function. TemplateUrl Usage: Prefer storing HTML template code in a seperate file and assign the path to templateUrl variable. Attribute …
How to Setup Eclipse IDE for Sonar Analysis
This article describes steps required to configure your eclipse for SonarQube such that developers are not required to leave the eclipse IDE to manage their source code quality. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are the key points described later in this article: Installing & Configuraing SonarQube in Eclipse Analyzing code using SonarQube Installing & Configuring SonarQube in Eclipse Follow the steps given on following pages to install and configure SonarQube in your Eclipse IDE. The page on Installing SonarQube in Eclipse consists of steps required to install SonarQube in the IDE. Once downloaded, it …
How to Quickly Get Started with Sonar
This article represents steps required to quickly get up and running with Sonar and keep it handy for your personal Java/.NET/PHP etc related projects. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are the key points described later in this article: Sonar setup instructions Configure HelloWorld Project for Code Analysis Sonar setup instructions Following are two key aspects of getting Sonar and dependencies installed, configured and setup for usage. Installation of SonarQube Installation of Code Analyzer Installation of SonarQube Following is instruction-set to get setup with SonarQube: Go to Sonar community edition page and download. Unzip the …
AngularJS – Non-nested Directive-to-Directive Communication – Code Example
This article presents concepts and code example around non-nested directives-to-directives communication in AngularJS. The demo for the code example presented later in this article can be accessed on this page, Demo – Non-nested Directives-to-Directives Communication. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are the key points described later in this article: What is Directive-to-Directive Communication? Service Helps Directives Communicate Code Example – Non-nested Directives Communication What is Directive-to-Directive Communication? When the change in one or more attributes of one directive need to trigger one or more events in other directives resulting in updating of their …
AngularJS QuizApp Framework on Github
This article describes the QuizApp web application written with AngularJS & Bootstrap that I open-sourced it today on GitHub. Here is the link for the QuizApp Project Homepage for you to get started. I have made use of this app in my other website, Free Online Tests and trust me, creating quizzes is so very smooth experience. The primary reason why I decided to make it open-source is the fact that there are several requests that I received in the past for posting the source code. However, as I created the app for my personal usage, I went ahead and modified it suitably for easy re-use. Please feel free to suggest …
Top 10 PHP Code Review Tips
This article represents top 10 areas to consider while you are taking up the task to do the code review of a PHP project. The other day, I had a discussion with one of the PHP senior developers who asked me about where to start on the task related with reviewing a PHP web application and, we brainstormed and came up with the list. Interestingly, apart from few, most of them can be pretty much applied to applications written with other programming languages as well. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos. Following are the key points described later …
I found it very helpful. However the differences are not too understandable for me