访问用户环境变量 [英] Access to user environment variable

问题描述

在我的.bashrc文件中：

  export DART_SDK = / home / nicolas / dart / dart-sdk 
  

在命令行中，但我看不到从 dart 这个用户变量，我只看到系统变量，但不是我的：

  var env = Platform.environment; 
 env.forEach（（k，v）=> print（Key = $ k Value = $ v））; 
  

我试过：

• 在Windows上，并且它可以在Mac上运行


• 。

<我的用户变量是否定义不好？我的代码是坏吗？

解决方案

使用以下代码：

  import'dart：io'; //服务器端/仅命令行包。 
 
 main（）{
 Map< String，String> env = Platform.environment; 
 env.forEach（（k，v）=> print（Key = $ k Value = $ v））; 
} 
  

我能够覆盖Windows和Mac上的环境变量。在Mac上，我不得不添加行到.bash_profile（.bashrc没有在我的Mac上加载）。

John

以下是dart文件的连结： https：// api.dartlang.org/1.13.0/dart-io/Platform-class.html

In my .bashrc file:

export DART_SDK=/home/nicolas/dart/dart-sdk

In command line, it works when I "echo" it. But I cannot see this user variable from dart with, I just see system variable but not mine:

var env = Platform.environment;
env.forEach((k,v) => print("Key=$k Value=$v"));

I tried:

• on windows and it works
• on mac but doesn't work

Is my user variable is not well defined? Is my code is bad? It's a bug?

解决方案

Using the following code:

import 'dart:io'; // Server side / command line only package.

main() {
  Map<String, String> env = Platform.environment;
  env.forEach((k, v) => print("Key=$k Value=$v"));
}

I was able to override environment variables on both Windows and Mac. On Mac I had to add the line to .bash_profile (.bashrc is not loaded on my Mac).

John

Here is the link to dart docs: https://api.dartlang.org/1.13.0/dart-io/Platform-class.html

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