finished ch20 intro

.obsidian/workspace.json

@@ -63,6 +63,20 @@
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@@ -116,7 +130,7 @@
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@@ -286,7 +301,6 @@
     "Leaky Reference Cycles.md",
     "Test Controls.md",
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Advanced Features.md

@@ -1 +1,16 @@
 # Advanced Features
+So far we learned about the most commonly used parts of the Rust programming language.
+
+Here we will look at a few aspects of the language you may run into once in a while but may not use everyday.
+
+This is intended to be used as a reference for when you encounter any unknowns.
+
+The features covered here are useful in very specific situations.
+
+In this chapter we will cover
+- [Unsafe Rust](./Unsafe%20Rust.md): How to opt out of some of Rust's guarantees and take responsibility for manually upholding those guarantees
+- [Advanced traits](): associated types, default type parameters, fully qualified syntax, supertraits, and the new type pattern in relation to traits
+- [Advanced types](): more about the newtype pattern, type aliases, the never type, and dynamically sized types
+- [Advanced functions and closures](): function pointers and returning closures
+- [Macros](): ways to define code that defines more code at compile time
+a

Unsafe Rust.md

@@ -0,0 +1 @@
+# Unsafe Rust