Major new features of Rust Programming Language

Some of the major new features of the Rust programming language include:

Improved error handling and error messages: Rust 1.46 introduced a new error handling model called !, which provides improved error messages and makes it easier for developers to handle and propagate errors in their programs. This new model also allows for better control over error messages, and enables developers to customize and tailor error messages to their specific needs.

New async/await syntax: Rust 1.39 introduced a new async/await syntax that makes it easier to write asynchronous programs in Rust. The new syntax allows developers to use async/await keywords to mark functions and blocks of code as asynchronous, and provides a more intuitive and readable way to write asynchronous code.

New tools for package management and dependency management: Rust 1.41 introduced a new package manager called cargo-vendor, which provides tools for managing dependencies and vendoring packages. The new package manager allows developers to specify exact versions of dependencies and packages, and ensures that the same versions are used across all environments and platforms.

Improved support for WebAssembly: Rust 1.46 introduced a new WebAssembly target, called wasm32-wasi, which provides improved support for developing and deploying Rust programs as WebAssembly modules. The new target allows developers to write Rust programs that can be compiled to WebAssembly and run on the Web, and provides access to new WebAssembly APIs and features.

New macros and macro expansion improvements: Rust 1.46 introduced a new macro system, called macro 2.0, which provides improved support for macros and macro expansion. The new macro system allows developers to define and use macros more easily, and provides better error messages and improved hygiene during macro expansion.

Overall, the Rust programming language continues to evolve and improve, with new features and improvements being added in each new release.