![]() Rust’s safeties can be partly suspended where you need to manipulate memory directly, such as dereferencing a raw pointer à la C/C++. Rust lets you live dangerously if you need to, to a point. (That also gives Rust another performance boost.) Rust is flexible The ownership approach also means that Rust does not require garbage-collected memory management, as in languages like Go or C#. The way ownership is transferred between objects is strictly governed by the compiler, so there are no surprises at runtime in the form of memory-allocation errors. Every bit of memory in a Rust program is tracked and released automatically through the ownership metaphor. Any given value in the language can be “owned,” or held and manipulated, only by a single variable at a time. ![]() Rust’s memory-management system is expressed in the language’s syntax through a metaphor called ownership. Rust controls memory management via strict rules. The compiler flags those issues and forces them to be fixed before the program ever runs. Rust’s syntax and language metaphors ensure that common memory-related problems in other languages-null or dangling pointers, data races, and so on-never make it into production. Most memory errors are discovered when a program is running. Rust won’t compile programs that attempt unsafe memory usage. Binaries are self-contained, with no external runtime apart from what the OS might provide, and the generated code is meant to perform as well as comparable code written in C or C++. Rust code compiles to native machine code across multiple platforms. ![]() Rust accomplishes its safety, speed, and ease of use through the following characteristics. A few key reasons drove that decision: Firefox deserved to make better use of modern, multicore processors and the sheer ubiquity of web browsers means they need to be safe to use.īut those benefits are needed by all software, not just browsers, which is why Rust evolved into a full-blown language project from a browser component project. ![]() Rust started as a Mozilla research project partly meant to reimplement key components of the Firefox browser. ![]()
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