unwrap_or_else in rust

. answered on June 3, 2022 Popularity 9/10 Helpfulness 4/10

answer unwrap_or_else in rust

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unwrap_or_else in rust

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// You can use .unwrap_or_else method instead of Result enum

use std::path::Path;
use std::fs;

fn main() {
  let path = Path::new("hello.txt");
  let content = String::from("hello world");

  fs::write(path, content).unwrap_or_else(|error| {
      panic!("an error occurred while writing the file: {}", error)
  })
}

Popularity 9/10 Helpfulness 4/10 Language rust

Source: Grepper

Tags: rust

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Contributed on Jun 03 2022

0 Answers Avg Quality 2/10

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unwrap_or_else in rust

Comment

// You can use .unwrap_or_else method instead of Result enum

use std::path::Path;
use std::fs;

fn main() {
  let path = Path::new("hello.txt");
  let content = String::from("hello world");

  fs::write(path, content).unwrap_or_else(|error| {
      panic!("an error occurred while writing the file: {}", error)
  })
}

Popularity 8/10 Helpfulness 2/10 Language rust

Source: Grepper

Tags: rust

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Contributed on Jun 03 2022

0 Answers Avg Quality 2/10

unwrap_or_else in rust

Comment

// You can use .unwrap_or_else method instead of Result enum

use std::path::Path;
use std::fs;

fn main() {
  let path = Path::new("hello.txt");
  let content = String::from("hello world");

  fs::write(path, content).unwrap_or_else(|error| {
      panic!("an error occurred while writing the file: {}", error)
  })
}

Popularity 8/10 Helpfulness 2/10 Language rust

Source: Grepper

Tags: rust

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Contributed on Jun 03 2022

0 Answers Avg Quality 2/10

unwrap_or_else in rust

Comment

// unwrap_or_else() might be better becuase of eagerness

fn main() {
	let _one = None.unwrap_or("one".to_string());
	let _two = None.unwrap_or_else(|| "two".to_string());
}

Popularity 1/10 Helpfulness 1/10 Language rust

Source: stackoverflow.com

Tags: rust

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Contributed on Nov 20 2022

Ethan Pilling

0 Answers Avg Quality 2/10

unwrap_or_else in rust

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