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notes/error-handling.md

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+---
+title: "Error Handling"
+tags: 
+    - #coding 
+    - #design-patterns
+    - #errors
+created: 2024-10-20 16:45
+---
+
+# Error Handling
+
+Different ways to handle errors in code
+
+## Errors as Exceptions - Try Catch
+
+### Try Catch
+
+## Errors as Values
+
+### `Result<T, Err>` - `Option<T>`
+
+The `Result<T, Err>` type (sometimes also called `Option<T>`, `Maybe<T>`, or others)
+is a custom data type that may or may not have a value, but like the
+Schrödinger's box, we won't know until we peak inside of it, forcing the code
+to handle both cases.
+
+This data type can be use to solve 2 common pitfals:
+
+- `Result<T, Err>`: this data can have a value (sometimes called `Ok(T)`), or can hold an error.
+- `Option<T>`: this data can have a value (sometimes called `Some(T)`) or can not have a value (sometimes called `None()`).
+
+This data type is often used with [[pattern matching]], allowing to handle each possible variation of the type.
+
+Resources:
+
+- [[Readwise/Monad Is Actually Easy.|This data type is a monad]]
+- Rust [`Option<T>`](https://doc.rust-lang.org/book/ch06-01-defining-an-enum.html#the-option-enum-and-its-advantages-over-null-values) and [`Result<T, E>`](https://doc.rust-lang.org/book/ch09-02-recoverable-errors-with-result.html) types.
+- Gleam [`Option(a)`](https://hexdocs.pm/gleam_stdlib/gleam/option.html) type.
+
+### Return touples

notes/none.md

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+---
+title: "None"
+tags:
+created: 2024-10-20 17:02
+---
+
+# None
+
+

notes/untitled.md

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+---
+title: "Untitled"
+tags:
+created: 2024-10-20 16:44
+---
+
+# Untitled
+
+