Shadowing Practice: Rust in 100 Seconds - Learn English Speaking with Video
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Rust, a memory-safe compiled programming language that delivers high-level simplicity with low-level performance.
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It's a popular choice for building systems where performance is absolutely critical, like game engines, databases, or operating systems,
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and is an excellent choice when targeting WebAssembly.
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It started as a side project of Gradon Whore in 2007, who named it after the Rust fungus.
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It was sponsored by Mozilla in 2009, and has been ranked the most loved programming language every year since 2016, with its fans being known as Rustations.
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Traditionally, high-level languages provide a garbage collector to nerf your control over memory management,
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while lower-level languages provide functions like Free and Allocate to shoot yourself in the foot.
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Rust takes a different approach.
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It has no garbage collector, but achieves memory safety with a concept known as ownership and borrowing.
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By default, every variable in Rust is immutable.
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This allows values to be used in the stack memory, which has minimal performance overhead.
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However, mutable values or objects with an unknown size at compile time are stored in the heap memory.
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Every value in a Rust program is assigned to a single variable known as its owner.
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When that variable goes out of scope, the memory allocated to it is dropped automatically.
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In some cases though, you may want to pass a reference to a different part of the program.
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Borrowing allows you to access a reference in memory without taking ownership of it.
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There are a ton of rules to go along with this system that the Rust BorrowChecker will validate at compile time.
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These rules keep your code safe while providing absolute control over performance.
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Rust also has a package manager called Cargo, where each individual package is a crate.
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To get started, install Rust, then run Cargo New from the command line.
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In the main.rs file, you'll find a main function, which is where the program will start executing.
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Declare a variable with let, followed by its name and type.
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The value can't be changed or reassigned by default, so add mutt to make it mutable.
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The name of the variable is the owner.
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A reference to its location in memory can be borrowed by other parts of the program by prefixing it with an ampersand.
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Then use a macro like println to log the value to the standard output.
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Rust also comes with a standard library that contains modules to handle I.O., the file system, concurrency, among many other things.
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Now compile your code to an executable with the Rust compiler.
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You just built a memory-safe executable that can handle the most performance-intensive system requirements.
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This has been Rust in 100 seconds.
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Hit the like button and subscribe if you want to see more short videos like this, and leave a comment if you want to see a full Rust tutorial.
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Thanks for watching, and I will see you in the next one.
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Sobre esta lección
¿Qué es la Técnica de Shadowing?
Shadowing es una técnica de aprendizaje de idiomas respaldada por la ciencia, desarrollada originalmente para la formación de intérpretes profesionales y popularizada por el políglota Dr. Alexander Arguelles. El método es simple pero poderoso: escuchas audio en inglés nativo y lo repites en voz alta de inmediato, como una sombra que sigue al hablante con solo 1-2 segundos de retraso. A diferencia de la escucha pasiva o los ejercicios de gramática, el shadowing obliga a tu cerebro y músculos de la boca a procesar y reproducir simultáneamente patrones de habla reales. Las investigaciones muestran que mejora significativamente la precisión de la pronunciación, la entonación, el ritmo, el habla conectada, la comprensión auditiva y la fluidez al hablar, convirtiéndola en una de las metodologías más efectivas para la preparación del IELTS Speaking y la comunicación en inglés en el mundo real.