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Upgrade to Ruby 3.0.6 (OpenSSL issues)

Mar 11, 20244 min read

Environment MacOS Sonoma 14.3 Original Ruby version: 2.7.8 Ruby Version Manager: RVM 1.29.12 Goal Upgrade Ruby from 2.7.8 to 3.0.6. Issues...

Upgrade to Ruby 3.0.6 (OpenSSL issues)

What’s the relationship between require, $LOAD_PATH and $LOADED_FEATURES in Ruby?

Feb 13, 20243 min read

It is common to see require 'something' in a Rails application. But what exactly does require do? What is require used for in Ruby? require is used to...

What’s the relationship between require, $LOAD_PATH and $LOADED_FEATURES in Ruby?

What's the difference between find_each, find_in_batches, in_batches in Rails?

Feb 7, 20222 min read

Sometimes we will use klass_name.all to get records from the database. That’ll be ok, if we only have 100 records in the database. However, using...

What's the difference between find_each, find_in_batches, in_batches in Rails?

How to define a multiline string in Ruby

Dec 8, 20212 min read

Note: The following was tested with Ruby 2.6.6 Keyword: Heredoc What is heredoc? Heredoc is used for a form of multiline strings and preserves the...

How to define a multiline string in Ruby

How to Benchmark my code in Ruby or Rails

Sep 18, 20214 min read

Recently, I had a job to fix the slow code. Before diving into fixing the slow code, I used Scout APM to identify the performance bottlenecks, which...

How to Benchmark my code in Ruby or Rails

Understand `nil` in Ruby

Aug 13, 20212 min read

What's nil? nil is an instance of NilClass. It's a special Ruby object used to represent the absence of any value. And it also behaves like false when...

Understand `nil` in Ruby