Validate Email Address in Javascript
Below is a nice little Javascript RegularExpression to validate email addresses. ..and to use it..
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Remove hash from window.location in Javascript
E.g. URL:http://example.com/?option=1&task=2&listing_id=36&layout=4&table=5#some_hash_value_here So how would you get the current URL using Javascript? That is really easy, you can use window.location.href or just simply window.location. But… Read More »Remove hash from window.location in Javascript
The Benefits and Dangers of Artificial Intelligence
Artificial Intelligence (AI) is usually defined as the science of making computers do things that require intelligence when done by humans. (Jack Copeland, 2000) Current… Read More »The Benefits and Dangers of Artificial Intelligence
The Decoded String at Index using Java
The Challenge An encoded string S is given. To find and write the decoded string to a tape, the encoded string is read one character at a time and the following… Read More »The Decoded String at Index using Java
Timing Issues in Real-time systems
What are Real-time Systems? If you look up the term “real-time” in a dictionary, it will tell you that it is the actual time during… Read More »Timing Issues in Real-time systems
Find the Minimum Absolute Difference in BST using Java
The question Given a binary search tree with non-negative values, find the minimum absolute difference between values of any two nodes. Example: Input: 1 \ 3 /… Read More »Find the Minimum Absolute Difference in BST using Java
Get the Second Highest Salary in MySQL
The problem Write a SQL query to get the second highest salary from the Employee table. +—-+——–+ | Id | Salary | +—-+——–+ | 1 | 100… Read More »Get the Second Highest Salary in MySQL
Find Maximum Subarrays using Java
The problem Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum. Example: Input:… Read More »Find Maximum Subarrays using Java
Finding Number Complements using Java
The problem Given a positive integer num, output its complement number. The complement strategy is to flip the bits of its binary representation. Example 1: Input: num =… Read More »Finding Number Complements using Java
Forensic Analysis on Linux (Unix)
Operating Systems come in a few competing choices, of which the major players are Apple’s MacOS, Microsoft’s Windows and then the various flavours of Linux,… Read More »Forensic Analysis on Linux (Unix)
Self Dividing Numbers using Python
Introduction A self-dividing number is a number that is divisible by every digit it contains. For example, 128 is a self-dividing number because 128 % 1 == 0, 128… Read More »Self Dividing Numbers using Python
RuntimeError: thread.__init__() not called (Python)
Today I got a really dumb error from Python. RuntimeError: thread.__init__() not called But luckily it’s really easy to fix! Below is the code before… Read More »RuntimeError: thread.__init__() not called (Python)
All About Distributed Databases
A database “is a structured collection of data. Card indices, printed catalogues of archaeological artefacts and telephone directories are all examples of databases”. We are… Read More »All About Distributed Databases
Network systems security risks
Networking has played a vital part in the transfer of information as well as the accessibility of information that was never available to previous generations… Read More »Network systems security risks
Communications and The Software Development Process
Software Engineering or the Software Development Process is broken down into the following phases. Requirements Design Implementation Verification Maintenance Communication can often breakdown in the… Read More »Communications and The Software Development Process
Get the total size of all the files in a directory
It’s amazing how many times I’ve need to find out the total size of all the files in a directory on one of our servers.… Read More »Get the total size of all the files in a directory
Structured and Object-Oriented Programming
Software development has really come a long way over the past few decades. Programming used to always be about doing things in a very procedural… Read More »Structured and Object-Oriented Programming
Moving a MySQL Database without downtime
At Statvoo we found ourselves in the position where we needed to move our master MySQL database without ANY downtime and for anyone who’s tried… Read More »Moving a MySQL Database without downtime
How to use Google Analytics in AngularJS
It seems to be quite a popular question with not as many answers to hold the weight. Google Analytics has always been more of a… Read More »How to use Google Analytics in AngularJS
Converting from Legacy to Client-Server or Distributed Systems
What is a legacy system? A legacy system is a computing system that has been around for a very long period of time, tends to… Read More »Converting from Legacy to Client-Server or Distributed Systems
Conceptual Architectural Views, with a focus on the Development View
What is Conceptual Architectural Views? Architectural views are abstractions, or simplifications, of the entire design, in which important characteristics are made more visible by leaving… Read More »Conceptual Architectural Views, with a focus on the Development View
Assessing Reusable Parts in a Software Architecture
During the Software Development Life Cycle (SDLC) the development team will come to realise that parts of any application have already been created before and… Read More »Assessing Reusable Parts in a Software Architecture
An Introduction to 2-Tier and 3-Tier Client-Server Systems
All software systems can be grouped in either a 2-tier or a 3-tier formation. The former is essentially where all clients contain application and business… Read More »An Introduction to 2-Tier and 3-Tier Client-Server Systems
Remove the Outermost Parentheses using Python
The Question A valid parentheses string is either empty (“”), “(” + A + “)”, or A + B, where A and B are valid parentheses strings, and + represents string concatenation. For example, “”, “()”, “(())()”,… Read More »Remove the Outermost Parentheses using Python
The Pros and Cons of Agile in Software Development
What is Agile in Software Engineering? Agile approaches help teams respond to unpredictability through incremental, iterative work cadences and empirical feedback. (AgileMethodology.org, 2008) Advantages of… Read More »The Pros and Cons of Agile in Software Development