Ukugqwala 1.35

Ithimba lokuthuthukisa i-Rust liyakujabulela ukumemezela inguqulo entsha yolimi lwabo: 1.35. I-Rust iwulimi lokuhlela olukuvumela ukuthi ubhale izinhlelo ezithembekile nezisebenza kahle.

Uma usuvele une-Rust efakiwe nge-rustup, ungabuyekeza ngomyalo:
$ rustup update uzinzile

Into esemqoka ekuvuselelweni ukuqaliswa kwezici zokuvala i-Fn, i-FnOnce, i-FnMut, ye-Box ,Ibhokisi ,Ibhokisi , ngokulandelana. Ukwengeza ikhono lokusakaza izikhombi emisebenzini engaphephile, ukushayela okuthi dbg!() macro manje sekungenzeka ngaphandle kwezimpikiswano, futhi umtapo wolwazi uzinzile.

Ngemininingwane:

• Enguqulweni entsha sengeze ukusetshenziswa kwezimpawu ze-Fn, FnOnce, FnMut zeBhokisi ,Ibhokisi ,Ibhokisi , ngokulandelana.
  Manje le khodi izosebenza:
  fn foo(x: Ibhokisi u8>) -> Vec {
  vec![1, 2, 3, 4].into_iter().imephu(x).qoqa()
  }

  Ungaphinda ushayele ukuvala ngokuqondile kusuka ku-Box :
  fn foo(x: Ibhokisi ) {
  x()
  }

• Ukuvalwa manje kungasakazwa kuzikhombi eziya ku-fn engaphephile.
  Manje le khodi isivumelekile:
  /// Okuhlukile kokuphepha yilezo zesikhombi esithi `engaphephile fn` esiphasisiwe.
  engaphephile fn call_unsafe_fn_ptr(f: engaphephile fn()) {
  f()
  }

  i-fnmain() {
  // UKUPHEPHA: Akukho okuguquguqukayo.
  // Ukuvalwa kuvinjelwe ngokwezibalo ekwenzeni izinto ezingaphephile.
  angiphephile {
  call_unsafe_fn_ptr(|| {
  dbg!();
  });
  }
  }

• Kwengezwe amandla okushayela i-dbg!() macro ngaphandle kwezingxabano.
  Uma udlulisela inkulumo ethile kule macro, i-macro izophrinta umphumela wayo. Isibonelo:
  i-fnmain() {
  vumela u-x = 0;

  uma dbg!(x == 1) {
  x += 1;
  }

  dbg!(x);
  }

  Uma usebenzisa le khodi uzobona:
  [src/main.rs:4] x == 1 = amanga
  [src/main.rs:8] x = 0

  Manje ungabhala kanje:
  i-fnmain() {
  vumela isimo = iqiniso;

  uma isimo {
  dbg!();
  }
  }

  Uma usebenzisa le khodi uzobona:
  [src/main.rs:5]
  

• Ezinye izingxenye zelabhulali ejwayelekile zizinzile
  • Izindlela ezintsha ze-f32 ne-f64:
    • f32::uphawu lwekhophi
    • f64::uphawu lwekhophi

    Empeleni, imisebenzi ikopisha uphawu lenye inombolo. Isibonelo:
    i-fnmain() {
    assert_eq!(3.5_f32.copysign(-0.42), -3.5);
    }

  • Kwengezwe izindlela ezintsha zezinhlobo zobubanzi
    • Ibanga::liqukethe
    • IbangaKusuka::liqukethe
    • IbangaLiya::liqukethe
    • Ibanga elihlanganisiwe::liqukethe
    • I-RangeToInclusive::iqukethe

    Ngalezi zindlela ungakwazi ukuhlola kalula ukuthi inani elithile lilandelana:
    i-fnmain() {
    uma (0..=10).iqukethe(&5) {
    println!("Okwesihlanu kufakwe kuziro ukuya kweshumi.");
    }
    }

  • Ungathola uhlu oluphelele lwama-API azinzile lapha
• Kulesi sibuyekezo, u-Clippy (Lolu wuhlelo oluhlola amaphutha amaningi ikhodi yakho) wengeze isheke elisha le- drop_bounds. Lokhu kuhlola kusebenza uma usetha umkhawulo: T: Drop - ngemisebenzi ejwayelekile:
  fn fu (x:T){}

  Ukuba ne-T: Ukuvinjelwa kokulahla ngokuvamile kuyiphutha, njengoba ezinye izinhlobo zikhishwa ngokushesha, njenge-u8. (Ungafunda kabanzi mayelana nalokhu lapha)

• Kuningi ukuthuthukiswa nokulungiswa kweCargo (umphathi wephakeji yolimi), uhlu olugcwele lwezinguquko

Source: linux.org.ru