How Missing Ampersands in C++ Cause Performance Bugs and Rust's Safety Solutions
By
nablags
The kind of bagel that ruins lesser bagels for you.
Summary
The article discusses a common programming mistake in C++ where missing an ampersand (&) causes unintended data copying instead of passing by reference, leading to performance issues. It contrasts this with Rust's move-by-default semantics that prevent such errors by design. The author explains how Rust's ownership system provides safety guarantees that help avoid subtle bugs common in C++ programming.
Key quotes
· 3 pulledThere's a funny typo that causes someone to copy data instead of 'referencing' in C++
Rust is nice because it provides defaults that protect you from some of these 'dumb' mistakes
I'll go over how the 'move by default' can prevent us from introducing this subtle behavior
You might also wanna read
Dynamic Borrow-Checking in a Toy Programming Language: Implementing Rust-like Memory Safety Without Static Types
This article presents a demonstration of a toy programming language that implements borrow-checking without static type-checking. The langua
scattered-thoughts.net·1mo ago
C++26 Standard Draft Finalized with Reflection, Memory Safety, Contracts, and New Concurrency Framework
The C++26 standard draft has been completed, introducing major new features including reflection capabilities that allow C++ to describe its
infoq.com·1mo agoUnderstanding Fil-C: A Simplified Model of Memory-Safe C/C++ Implementation
The article presents a simplified model of Fil-C, a memory-safe implementation of C/C++. It explains that while the real Fil-C uses a compil
Sky: An Experimental Elm-Inspired Programming Language That Compiles to Go
Sky is an experimental programming language that combines Go's pragmatism with Elm's elegance to create a fullstack functional programming l
github.com·1mo ago
Analyzing Rust's Coherence and Orphan Rules: Ecosystem Development Challenges and Proposed Solutions
This article critiques Rust programming language's coherence rules and orphan rules, which prevent implementing traits for types defined in
boxyuwu.blog·2mo ago
SBCL Fibers: Implementation Design for Lightweight Cooperative Threads
This is a draft design document describing the implementation of lightweight userland cooperative threads (called 'fibers') for SBCL (Steel
atgreen.github.io·2mo ago