Notes about programming
GraphQL is an API standard to provide resources on the server-side to various types of clients. GraphQL itself is a specification and doesn’t provide an implementation. For Ruby on Rails, GraphQL Ruby https://graphql-ruby.org/ is the most popular library.
The easiest way to create a Ruby on Rails app is absolutely to hit the command:
I used to use Datomic, https://www.datomic.com, a lot. Datomic is a unique database. The most attractive feature would be the idea of preserving transactions. Based on the transaction id, Datomic is able to pull out the past data which has been already updated later.
This post is going to be very different from what I write here. The content is a memo how I create a GCP (Google Cloud Platform) instance for Deep Learning. While I study algorithm stuff, I also have been studying Deep Learning. In my early days, I tried to train my Deep Learning model only on a laptop. My laptop is 2012 model MacBook Pro, so I would say it is reasonably fast. However, when it comes to Deep Learning, the training was quite painful on the such machine. Often, I ran the training over night to get a disappointed result. Still, I didn’t use any of pricey cloud environment since it was my personal study unrelated to my day job. I wanted to save money.
Problems which ask a binary tree traverse, add/delete nodes, etc. are popular in algorithm questions. The binary trees are often just a binary tree or binary search tree. Sometimes, the problem pinpoints a particular type of a binary tree, for example, a balanced binary tree or complete binary tree.