Pratique du Shadowing: Rust in 100 Seconds - Apprendre l'anglais à l'oral avec la vidéo
Création de la leçon...
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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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Vocabulaire et conseils d’expression pour cette leçon
Cette vidéo contient 32 phrases et 488 mots à répéter en shadowing. La partie parlée dure 2:27. Le locuteur parle vite, environ 199 mots par minute : attendez-vous à des liaisons et à des sons réduits. Seuls 76 % des mots font partie des 3 000 mots les plus courants en anglais, le vocabulaire est donc exigeant.
Vocabulaire clé de cette vidéo
15 mots de la vidéo à retenir, avec leur prononciation et leur sens :
| Mot | Prononciation | Sens |
|---|---|---|
| variable adjectif | [ˈvæɹ.i.ə.bl̩] | variable |
| package nom | /ˈpæk.ɪd͡ʒ/ | paquet, paquetage |
| ownership nom | /ˈoʊnɚʃɪp/ | propriété |
| default nom | /dɪˈfɔlt/ | défaut, non-respect |
| garbage nom | /ˈɡɑɹ.bɪd͡ʒ/ | ordures, déchet |
| collector nom | /kəˈlɛk.tɚ/ | collectionneur, collectionneuse |
| rank nom | /ˈɹæŋk/ | rangée |
| output nom | /ˈaʊtpʊt/ | sortie |
| database nom | /ˈdeɪtəˌbeɪs/ | base de données, banque de données |
| requirement nom | /ɹɪˈkwaɪɹmənt/ | exigence, besoin |
| scope nom | /skəʊp/ | portée |
| install verbe | /ɪnˈstɔl/ | installer |
| minimal adjectif | /ˈmɪn.ə.məl/ | minimum |
| intensive adjectif | /ɪnˈtɛnsɪv/ | intensif, intensifs |
| traditionally adverbe | /tɹəˈdɪʃ.ə.nə.li/ | traditionnellement |
Prononciation à surveiller
- Les sons « sh » et « zh »: ownership /ˈoʊnɚʃɪp/, traditionally /tɹəˈdɪʃ.ə.nə.li/
- Mots longs — placez bien l’accent: traditionally /tɹəˈdɪʃ.ə.nə.li/, simplicity /sɪmˈplɪsɪti/, executable /ˈɛksəkjutəbl/, concurrency /kəŋˈkʌɹənsi/, macroeconomics /ˌmæk.ɹoʊˌiː.kəˈnɒ.mɪks/
Comment s’entraîner avec cette vidéo
- Écoutez la vidéo en entier une fois sans parler et notez les mots que vous ne connaissez pas.
- Commencez à la vitesse 0,75×, répétez phrase par phrase, puis revenez à la vitesse normale quand cela devient facile.
- Enregistrez-vous et comparez avec l’original, en faisant attention à des mots comme variable, package, ownership.
La grammaire de cette vidéo
Les structures que le locuteur utilise le plus, avec les mots exacts de la vidéo :
| Structure | Dans la vidéo |
|---|---|
| Voix passive be + participe passé — l’accent est mis sur ce qui arrive, pas sur qui le fait | was sponsored · are stored · is assigned |
| Present perfect have/has + participe passé — une action passée qui compte encore maintenant | has been ranked · has been |
| Propositions relatives who / which + proposition — une précision sur une personne ou une chose | memory, which has · function, which is |
Qu'est-ce que la technique du Shadowing ?
Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.