a828e79480
This commit tweaks the interface of the `std::env` module to make it more ergonomic for common usage: * `env::var` was renamed to `env::var_os` * `env::var_string` was renamed to `env::var` * `env::args` was renamed to `env::args_os` * `env::args` was re-added as a panicking iterator over string values * `env::vars` was renamed to `env::vars_os` * `env::vars` was re-added as a panicking iterator over string values. This should make common usage (e.g. unicode values everywhere) more ergonomic as well as "the default". This is also a breaking change due to the differences of what's yielded from each of these functions, but migration should be fairly easy as the defaults operate over `String` which is a common type to use. [breaking-change]
23 lines
897 B
Rust
23 lines
897 B
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use std::env::*;
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fn main() {
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for (k, v) in vars_os() {
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let v2 = var_os(&k);
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// MingW seems to set some funky environment variables like
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// "=C:=C:\MinGW\msys\1.0\bin" and "!::=::\" that are returned
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// from vars() but not visible from var().
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assert!(v2.is_none() || v2.as_ref().map(|s| &**s) == Some(&*v),
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"bad vars->var transition: {:?} {:?} {:?}", k, v, v2);
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}
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}
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