Web-Projects
/
blog-static
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Finish draft of Idris post
continuous-integration/drone/push Build is passing Details

This commit is contained in:
Danila Fedorin 2020-02-29 17:52:29 -08:00
parent 33b1457e91
commit ae9805e4f2
1 changed files with 11 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
content/blog/typesafe_interpreter.md
View File

@ -1,7 +1,6 @@
---
title: Meaningfully Typechecking a Language in Idris
date: 2020-02-27T21:58:55-08:00
draft: true
tags: ["Haskell", "Idris"]
---
@ -253,9 +252,18 @@ Awesome!
### Wrapping Up
In this post, we learned that type checking can be used to translate an expression into
a more strongly-typed data type, which can be (more) safe to evaluate. To help
strengthen the types of our expression language, we used the Idris language and
strengthen the types of
{{< sidenote "right" "if-else-note" "our expression language," >}}
You may be thinking, "but where did the if-expressions go?". It turns out
that making sure that the branches of an if-expression are of the same
type is actually a fairly difficult task; the best way I found was
enumerating all the possible "valid" combinations of types in a case-expression.
Since this is obviously not the right solution, I decided to publish what I have,
and look for an alternative. If I find a better solution, I will write a follow-up
post.
{{< /sidenote >}} we used the Idris language and
its support for dependent types and Generalized Algebraic Data Types (GADTs).
I this was interesting!
I hope this was interesting!
As usual, you can find the code for this post in this website's Git repository. The
source file we went through today is found [here](https://dev.danilafe.com/Web-Projects/blog-static/src/branch/master/code/typesafe-interpreter/TypesafeIntr.idr).