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Use Hash fetch when using Rails params in controllers
A Ruby hash is typically accessed using square brackets, like hash[key], but you can also use the method fetch, like hash.fetch(key).
Building ruby with jemalloc ·
There's been a lot of discussion recently about running Ruby with jemalloc. Sounds like some good memory savings to be had basically for free.
Minitest 6: Test Feistier! | zenspider.com | by ryan davis
TL;DR: usability improvements, (more) parallelization and distribution are coming, but how much is still up for grabs and I’d love to talk about it and/or get help with it.
Ruby on WebAssembly
Welcome to 2018, where some of the most exciting innovations are happening in the compiler space.
How to Implement a Ruby Hash like Grammar in Parslet
Before you can understand how to build a parser using parslet, you need to understand why you might want to. In my case I have a library called rundoc it.
Using singleton objects as default arguments in Ruby
Sometimes you would like to define a method which takes an optional argument, but the programmer might pass nil. And your code needs to distinguish between the value not being provided (default value) and nil. How can it be.
Event Sourcing made Simple
Most software developers use a tool to keep track of code history. Git is a fantastic example that’s used widely across the industry. Type git log and you can see all the changes made to a.
Testing Example Code In Your Jekyll Posts
Blocks of code in blog posts and articles often contain errors.I see it frequently, in other people’s writing and my own.Code examples are usually not.
Refactoring for the Tell Don't Ask Pattern
Design patterns provide us with guidelines to help us implement clear and concise maintainable code. Here we'll focus on implementing an easy-to-read, easy-to-update code base with object-oriented design, specifically using the Tell Don't Ask.
For want of Pattern Matching in Ruby
It employs a collection of various tricks related to === and Proc in Ruby. Don’t know what === can do yet? You might want to start with this article first: Qo came from a discussion I’d had with.
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