When I first learnt about regular expressions I thought “cool I can match characters or patterns in text, I’ll just google the regex pattern when I need it” and when that time came I discovered regex is almost like a programming language itself with many different concepts like; anchors, alternation, groups, backreferences, lookahead, lookbehind and the list goes on…

I was building a Rails app which required a Contacts model to be able to relate to many other contacts where the relationship was reciprocal.

Understanding Ruby blocks, procs and lambdas.

I was building a marketplace app where I required 2 types of users; normal users and business owners. This is a post on how I create 2 registrations with 1 user model using Devise.

This challenge was to implement Floyds Cycle Detection algorithm also know as the Tortoise and the Hare algorithm. It’s used to detect a loop in a singly linked list.

In the previous blog post I reversed a linked list using a stack. In this challenge I had to reverse a linked list using a mutation to modify the initial list.

In this challenge I learned about 2 new data structures; a linked list and a stack and how to implement them by hand. The challenge was specially to create a stack class and then reverse the linked list using this stack.

A good challenge for practicing 2 dimensional array manipulation.

A couple of code challenges came up on permutations. Here are my solutions and how I went about tackling the challenges.

This came up as a code challenge on Codewars and I enjoyed it so why not blog about it. It includes learnings of Arrays and Enumerable.

Renaming a model and table in Rails is easy using a migration and rename_table, but then there’s a stack of references to this old name that will also need to be updated. I’m going to cover what those are.

A short post on writing more readable code using the unless statement and how to write less code for conditional assignments.

Pre-built development environments are common these days via either a cloud service or sharing of a pre-built vagrant environment, but its always good to know what’s under the hood.

Recently I needed to write a rails helper to generate some html code with quite a bit of nested html. I quickly found this can be quite tricky and I discovered I wasn’t alone with a quick google of terms like ‘nesting content_tag’, ‘content_tag conact’, ‘content_tag table’.