# 1.0.0[−][src]Function std::env::vars_os

ⓘImportant traits for VarsOs

### Important traits for VarsOs

`impl Iterator for VarsOs type Item = (OsString, OsString);`

    pub fn vars_os() -> VarsOs

Returns an iterator of (variable, value) pairs of OS strings, for all the environment variables of the current process.

The returned iterator contains a snapshot of the process's environment variables at the time of this invocation. Modifications to environment variables afterwards will not be reflected in the returned iterator.

# 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() {
        println!("{:?}: {:?}", key, value);
    }Run

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