sicp VS excoptional

hey guys, I'm reading Structure and Interpretation of Computer Programs. I'm reading this epub version: https://github.com/sarabander/sicp

Structure and Interpretation of Computer Programs" by Abelson, Sussman, and Sussman

I recommend reading the SICP (fore example here) to get your mind blown and start with lisp syntax. The book uses Scheme which is a Lisp dialect but not Common Lisp. I found the concepts mind-blowing.

This is a good site for reading it: https://sarabander.github.io/sicp/

HTML5 version that is designed to look like pdf version

https://sarabander.github.io/sicp/

I'm trying to read the epub version of SICP. But images aren’t rendered in Book Reader or Librera

> I mean Scala because I guess it actually has it, but worth pointing out it's like 30 LOC to define one for JS, depending on how many convenience methods you want.

Here's one I wrote: https://github.com/sbernheim4/excoptional

I fully believe it to be one of the best Option implementations in JS/TS

https://github.com/sbernheim4/excoptional is an option object for js/ts

One benefit to keeping your value wrapped in a Maybe is that as you transform and manipulate the value and pass it around in your system, you leave it up to the last place in your system that uses the value to define the fallback value in the case of a None rather than defining a fallback value part way through and establish a convention that the fallback value means nothing was found at some other part of your system.

Another benefit to using Maybes is that you avoid the rigamarole of null checks at every call site where you want to use the value. If you have a function that returns null or a value, whenever you call that function you'll always have to add an if guard to validate it's not null. If it is, that function itself may return null, and callers to it will again have to implement the same check.

I wrote a JS implementation of the Option object and the readme has lots of specific examples about these benefits: https://github.com/sbernheim4/excoptional