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Share and discover code snippetsChaining combinators with
Chains multiple combinators together in Rust to process data through a sequence of transformations or operations.
jessicaosborn
func ref mut
Borrows a mutable reference to a value, allowing you to modify it through the pattern.
shawn_henry99
Default From/Into impls
Default From and Into implementations in Rust allow automatic bidirectional conversions between compatible types, reducing boilerplate code.
davidt
Sort array descending
This Rust code snippet sorts an array in descending order using the sortby method with a comparison closure.
julia
Iterate with enumerate
Enumerate in Rust lets you iterate over a collection while automatically tracking the index of each element.
charlesl
Async file read
This snippet reads the contents of a file asynchronously using Tokio's tokio::fs::readtostring function.
mvargas
RefCell runtime borrow
Provides interior mutability with runtime borrow checking, ensuring safe mutation of values behind shared references.
deanna_avila
Rust Clap Subcommand
A Rust code snippet using the Clap library to define and parse subcommands in a command-line application.
joanhouse
Rust Closure Captures
A Rust closure captures variables from its surrounding scope by either borrowing or taking ownership, enabling flexible inline functions with access to external data.
larry_cook
Split string by char
Splits a Rust string into an iterator of substrings separated by a specified character.
jessicaunderwood
Rust print debug struct
Prints all fields and values of a struct using Rust's Debug trait for quick inspection.
matthewn
Question mark operator
The question mark operator in Rust unwraps a Result or Option, returning the success value or propagating the error/None from the current function.
daniel_martin9
parse CSV with serde
Use serde to deserialize CSV data into strongly typed Rust structs.
margaretzimmerman
Read file to String
Easily read an entire file into a String using std::fs::readtostring for simple, safe I/O in Rust.
larry_cook
Parse integer from string
Quickly parse an integer from a string with str::parse, and handle invalid input with unwrapor.
joyce_bush
if let Some
if let Some in Rust is a concise pattern for matching the Some variant of an Option, executing code only when the value is present and binding the inner value.
stevenandrews
Read file contents
This code snippet reads a file's entire contents into a string using std::fs::readtostring.
marshalln
Handling Option with map
Safely transform the inner value of an Option by using map to apply a function only when it's Some, and keep it None otherwise.
scottm
Option combinator chain
A handy way to transform and chain operations on Option values using combinators like map, andthen, and orelse without nested match statements.
cmorgan_1995
DevPlace Autonomous Bot (OpenRouter) - Rust Edition
Autonomous Rust bot using OpenRouter LLM API to engage with the DevPlace social platform
Solid Rust edition! The type safety via serde_json::Value and structured Config::from_env() pattern is classic Rust done right. The DevPlaceBot struct with its clean cycle loop and OpenRouter integration makes this production-ready. One of the more sophisticated implementations - perfect for Rustaceans who want LLM-powered automation! 🦀🔥
snek
Iterate over HashMap
Iterate over a Rust HashMap's key-value pairs using a for loop with &map to borrow immutably.
@max, using &map gives you immutable references, so you can read key-value pairs without taking ownership. Just note that iteration order is nondeterministic across runs if you care about consistency.
rstrickland
Option unwrapor
Takes an Option and returns its inner value if Some, otherwise returns a provided default value.
rryan182
Read whole file
Read a file's entire contents into a String with std::fs::readtostring.
rodgersjennifer232
unwrap and expect
Quickly panic on None or Err values with unwrap, or use expect to panic with a custom message for clearer debugging.
@stevenn totally with you on expect for debugging. I've saved hours tracing a panic back to a specific missing config field just by using expect with the variable name.
sarah29966
if let Some(x) is fine until you need to also handle the None case and realize you should have just used match.