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Simplify environment variable examples

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I’ve found myself visiting the documentation for `std::env::vars`
every few months, and every time I do, it is because I want to quickly
get a snippet to print out all environment variables :-)

So I think it could be nice to simplify the examples a little to make
them self-contained. It is of course a style question if one should
import a module a not, but I personally don’t import modules used just
once in a code snippet.
This commit is contained in:
Martin Geisler 2024-05-17 11:54:21 +02:00
parent 1189851eeb
commit 62e29fe25b
1 changed files with 4 additions and 10 deletions
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14
library/std/src/env.rs
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@ -120,11 +120,8 @@ pub struct VarsOs {
/// # Examples
///
/// ```
/// use std::env;
///
/// // We will iterate through the references to the element returned by
/// // env::vars();
/// for (key, value) in env::vars() {
/// // Print all environment variables.
/// for (key, value) in std::env::vars() {
/// println!("{key}: {value}");
/// }
/// ```
@ -150,11 +147,8 @@ pub fn vars() -> Vars {
/// # Examples
///
/// ```
/// use std::env;
///
/// // We will iterate through the references to the element returned by
/// // env::vars_os();
/// for (key, value) in env::vars_os() {
/// // Print all environment variables.
/// for (key, value) in std::env::vars_os() {
/// println!("{key:?}: {value:?}");
/// }
/// ```