Guru on Rails
1. Solution. I apply single responsibility principle: isBalanced method involves: counting_lett...
1. Searching the products which have duplicated names. Product.select("name, count(*) as num").gr...
This guideline for MAC OS. 1. Installation Installing: Rabbitmq 3.7.9 Redis Ruby 2.5.1 Rabbitmq...
Software Architecture Best Practices Performance
Rabbitmq and Sneakers would bring to us a ton of benefits. That is one of many solution for impro...
factory_bot.rb require 'set' require 'active_support/core_ext/module/delegation' require 'active...
I'm sitting here at Trung Nguyen coffeeshop in Vietnam near the Airport. I'm solving a problem fo...
You might know, algorithm almost needs data structure. Any data structure is born with at least o...
Transactions move value from transaction inputs to transaction outputs. An input is a reference ...
Problem solving is the essential skill. So what is the good way to improve this skill? So many de...
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