---
title: "Discussion on \"String Calculator Kata in F# - fall of exceptions\" | Hashnode"
description: "Discussion on \"String Calculator Kata in F# - fall of exceptions\". Today we are going to implement handling negative values and values that are greater than 1000. It's step 5 and 6 from the kata description:\n\ncalling Add with a negative number will throw an exception \"negatives not allowed\" - and return passed negat..."
url: "https://hashnode.com/posts/string-calculator-kata-in-f-fall-of-exceptions/5fb90ca91b7ab0041800d38c"
---

[Feed](https://hashnode.com/feed) /

Discussion

# [String Calculator Kata in F# - fall of exceptions](https://blog.ciechowski.net/string-calculator-kata-in-f-fall-of-exceptions?utm_source=hashnode&utm_medium=feed)

Today we are going to implement handling negative values and values that are greater than 1000. It's step 5 and 6 from the kata description: calling Add with a negative number will throw an exception "negatives not allowed" - and return passed negat...

Nov 21, 2020 · 6 min read · blog.ciechowski.net  
Updated Dec 7, 2020  
Read the article

-   [#tdd](https://hashnode.com/tag/tdd)
-   [#functional-programming](https://hashnode.com/tag/functional-programming)

## Written by

[Kuba Ciechowski](https://hashnode.com/@kciechowski)

@kciechowski · Gdańsk, Poland

  
[View profile](https://hashnode.com/@kciechowski)

soft skilled developer

## Responses

Markdown supported · ⌘↵ to post

No responses yet.