100 Techniques for Writing Readable Rust Code

Readable Rust Code

I recently came across a superb ebook called “100 Techniques for Writing Readable Rust Code” by Kanro Tomoya. This is an invaluable guide for any Rust developer aiming to write cleaner and more idiomatic code.

The original versions I found were in EPUB and a converted PDF, which can be harder to read and navigate. Additionally, the original formats lack code syntax highlighting, making the Rust examples less clear. To improve the experience, I have converted the ebook into Markdown. Furthermore, I’ve enhanced it by adding intuitive navigation buttons (Previous, Home, Next) at the end of every chapter for a smoother reading flow.

Heartfelt thanks to Kanro Tomoya for creating this excellent resource and sharing it with the Rust community.

Table of Co…

Readable Rust Code

Heartfelt thanks to Kanro Tomoya for creating this excellent resource and sharing it with the Rust community.

Number	Title
1	Use pattern matching with match for clear and concise control flow
2	Leverage Option and Result types for safe and explicit error handling
3	Utilize iter, map, and filter for functional-style data processing
4	Employ enum to represent a type that can be one of several variants
5	Use trait to define shared behavior across different types
6	Name variables and functions descriptively to convey their purpose
7	Use snake_case for variable and function names for consistency
8	Prefix boolean variables with is_, has_, or can_ to indicate their nature
9	Use const and static for constants to make their immutability clear
10	Name modules and files to reflect their contents and purpose
11	Avoid abbreviations that are not universally understood
12	Use full words instead of single letters for variable names
13	Avoid using similar names for different variables to prevent confusion
14	Ensure function names clearly describe their actions or results
15	Use consistent naming conventions throughout the codebase
16	Use impl blocks to group related methods for a type
17	Leverage From and Into traits for type conversions
18	Use Cow (Clone on Write) for efficient handling of borrowed and owned data
19	Utilize Rc and Arc for reference counting and shared ownership
20	Use RefCell and Mutex for interior mutability and thread safety
21	Comment on the purpose of complex algorithms or data structures
22	Explain the reasoning behind non-obvious design decisions
23	Document the expected input and output of functions
24	Comment on the usage of unsafe code and its safety guarantees
25	Use doc comments (///) to generate documentation for public APIs
26	Keep comments up-to-date with code changes
27	Avoid redundant comments that restate the obvious
28	Use comments to explain why, not what, the code is doing
29	Be concise and to the point in your comments
30	Use TODO comments to indicate areas for future improvement
31	Use ? operator for concise error propagation
32	Leverage async and await for asynchronous programming
33	Use Box for heap allocation and dynamic dispatch
34	Utilize Vec for dynamic arrays and HashMap for key-value storage
35	Use slice and str for efficient string and array handling
36	Format code consistently using rustfmt
37	Organize code into modules and submodules logically
38	Use whitespace and indentation to enhance readability
39	Group related code together and separate different sections with blank lines
40	Avoid deeply nested code by refactoring into smaller functions
41	Use if let and while let for concise conditional checks
42	Prefer for loops over while loops for iteration
43	Use break and continue judiciously to control loop flow
44	Avoid complex nested match statements by refactoring into functions
45	Use return early to handle error cases and reduce nesting
46	Use match guards to add conditions to pattern matches
47	Leverage Result’s combinators like map and and_then
48	Use unwrap_or and unwrap_or_else for default values
49	Utilize Option’s combinators like map and and_then
50	Use Result and Option for error handling and optional values
51	Leverage Cow for efficient handling of borrowed and owned data
52	Use Rc and Arc for reference counting and shared ownership
53	Utilize RefCell and Mutex for interior mutability and thread safety
54	Use Box for heap allocation and dynamic dispatch
55	Leverage async and await for asynchronous programming
56	Use descriptive names for variables to indicate their purpose
57	Avoid Single-Letter Variable Names
58	Use ‘let’ for Declarations, ‘mut’ Only When Necessary
59	Group Related Variables
60	Use Constants for Unchanging Values
61	Break down complex functions into smaller, single-purpose functions
62	Use helper functions to encapsulate repetitive code
63	Avoid side effects in functions
64	Use clear and descriptive function names
65	Limit the number of parameters a function takes
66	Use impl blocks to group related methods for a type
67	Leverage From and Into traits for type conversions
68	Use Cow (Clone on Write) for efficient handling of borrowed and owned data
69	Utilize Rc and Arc for reference counting and shared ownership
70	Use RefCell and Mutex for interior mutability and thread safety
71	Break Down Large Expressions
72	Use Intermediate Variables
73	Refactor complex expressions into helper functions
74	Use parentheses to make the order of operations explicit
75	Avoid chaining too many method calls in a single line
76	Identify and extract unrelated sub-problems into separate functions
77	Use helper functions to encapsulate distinct tasks
78	Modularize code to separate concerns and improve readability
79	Use traits to define shared behavior and reduce code duplication
80	Refactor large functions into smaller, more manageable pieces
81	Use ? operator for concise error propagation
82	Leverage async and await for asynchronous programming
83	Use Box for heap allocation and dynamic dispatch
84	Utilize Vec for dynamic arrays and HashMap for key-value storage
85	Use slice and str for efficient string and array handling
86	Choose Vec for dynamic arrays when the size is unknown at compile time
87	Use HashMap for key-value pairs when fast lookup is needed
88	Leverage BTreeMap for ordered key-value storage
89	Use Option and Result for optional and error-prone values
90	Choose Rc and Arc for shared ownership and reference counting
91	Use Result for Error Handling
92	Leverage unwrap_or and unwrap_or_else for Default Values
93	Use expect with meaningful error messages for debugging
94	Handle errors at the appropriate level of abstraction
95	Use thiserror or anyhow crates for custom error types and handling
96	Write generic functions to handle multiple types
97	Use traits to define shared behavior and enable polymorphism
98	Leverage impl Trait for concise and flexible function signatures
99	Use macro_rules! to create reusable macros
100	Refactor common patterns into reusable functions or modules
101	Use crate and pub keywords to control visibility and reuse
102	Leverage Cargo workspaces to manage multiple related packages

Readable Rust Code

Table of Co…

Readable Rust Code

Table of Contents

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