Update readme.md

best-practices/readme.md

@@ -66,27 +66,28 @@ Most of the coercions involve silent conversions of pointer and reference types
 ###  3.5 Familiarize yourself with standard traits
 https://www.lurklurk.org/effective-rust/std-traits.html  
 
-- Clone: Items of this type can make a copy of themselves when asked.  
-- Copy: If the compiler makes a bit-for-bit copy of this item's memory representation, the result is a valid new item.  
-- Default: It's possible to make new instances of this type with sensible default values.  
-- PartialEq: There's a partial equivalence relation for items of this type – any two items can be definitively compared, but it may not always be true that x==x.  
-- Eq: There's an equivalence relation for items of this type: any two items can be definitively compared, and it is always true that x==x.  
-- PartialOrd: Some items of this type can be compared and ordered.  
-- Ord: All items of this type can be compared and ordered.  
-- Hash: Items of this type can produce a stable hash of their contents when asked.  
-- Debug: Items of this type can be displayed to programmers.  
-- Display: Items of this type can be displayed to users.
+Derivable traits: 
+- `Clone`: Items of this type can make a copy of themselves when asked.  
+- `Copy`: If the compiler makes a bit-for-bit copy of this item's memory representation, the result is a valid new item.  
+- `Default`: It's possible to make new instances of this type with sensible default values.  
+- `PartialEq`: There's a partial equivalence relation for items of this type – any two items can be definitively compared, but it may not always be true that x==x.  
+- `Eq`: There's an equivalence relation for items of this type: any two items can be definitively compared, and it is always true that x==x.  
+- `PartialOrd`: Some items of this type can be compared and ordered.  
+- `Ord`: All items of this type can be compared and ordered.  
+- `Hash`: Items of this type can produce a stable hash of their contents when asked.  
+- `Debug`: Items of this type can be displayed to programmers.  
+- `Display`: Items of this type can be displayed to users.
 
 Other (non-deriveable) standard traits are covered in other Items, and so are not included here. These include:
 
-- Fn, FnOnce and FnMut: Items implementing this trait represent closures that can be invoked. See Item 2.
-- Error: Items implementing this trait represent error information that can be displayed to users or programmers, and which may hold nested sub-error information. See Item 4.
-- Drop: Items implementing this trait perform processing when they are destroyed, which is essential for RAII patterns. See Item 11.
-- From and TryFrom: Items implementing this trait can be automatically created from items of some other type, but with a possibility of failure in the latter case. See Item 6.
-- Deref and DerefMut: Items implementing this trait are pointer-like objects that can be dereferenced to get access to an inner item. See Item 9.
-- Iterator and friends: Items implementing this trait represent collections that can be iterated over. See Item 10.
-- Send: Items implementing this trait are safe to transfer between multiple threads. See Item 17.
-- Sync: Items implementing this trait are safe to be referenced by multiple threads. See Item 17. 
+- `Fn, FnOnce and FnMut`: Items implementing this trait represent closures that can be invoked. See Item 2.
+- `Error`: Items implementing this trait represent error information that can be displayed to users or programmers, and which may hold nested sub-error information. See Item 4.
+- `Drop`: Items implementing this trait perform processing when they are destroyed, which is essential for RAII patterns. See Item 11.
+- `From and TryFrom`: Items implementing this trait can be automatically created from items of some other type, but with a possibility of failure in the latter case. See Item 6.
+- `Deref and DerefMut`: Items implementing this trait are pointer-like objects that can be dereferenced to get access to an inner item. See Item 9.
+- `Iterator and friends`: Items implementing this trait represent collections that can be iterated over. See Item 10.
+- `Send`: Items implementing this trait are safe to transfer between multiple threads. See Item 17.
+- `Sync`: Items implementing this trait are safe to be referenced by multiple threads. See Item 17. 
 
 
 ###  3.1. Use the type system to express your data structures