Vue2 提供了一个内置函数slice()可以将响应式数组变量转换为普通数组变量。调用该函数可以将响应式数组转换为一个全新的非响应式数组。例如：
let a = this.$set(Vue.observable([1,2,3]), 0, 4);
let b = a.slice(); // b不是响应式的，而a仍然是响应式的

计算机：在 Mac 上安装 Supervisor 非常简单，只需要用 pip 安装即可：

pip install supervisor

安装成功后，你可以使用以下命令来初始化 supervisor，其中 program.conf 是你的程序配置文件：

supervisord -c program.conf

该文件可以以以下格式包含一个示例程序：

[program:example]
command=/usr/bin/python example.py
autostart=true
autorestart=true
stderr_logfile=/var/log/example.err.log
stdout_logfile=/var/log/example.out.log
priority=1

React.js allows for dynamic component rendering with the use of the React.createElement() method. This method takes in three arguments: the component type, an object of props, and any child elements or text. You can then use JSX syntax to create your component, like so:

 const MyComponent = (props) => {
  return (
    <React.Fragment>
      {React.createElement('MyComponent', props, "Hello World!")}
    </React.Fragment>
  )
}

受控组件是受应用状态的控制的，而非受控组件则不受应用状态的控制。下面是一个受控组件的代码示例：

 
class ControlledInput extends React.Component { 
  constructor(props) { 
    super(props); 
   
    // 将state更新传递给value 
    this.state = { 
      input: "" 
    }; 
   
    this.handleInputChange = this.handleInputChange.bind(this); 
  } 
 
  handleInputChange(event) { 
    this.setState({ input: event.target.value }); 
  } 
 
  render() { 
    return ( 
      <input  
        value={ this.state.input }  
        onChange={ this.handleInputChange }  
      /> 
    ); 
  } 
}

You should start by researching programming languages that are based on C and the concepts behind them. Additionally, you should study the syntax of C, as this will be the foundation for your language. You should also look into compiler design and algorithms, as these will be used to translate your language into machine code. Finally, you should consider developing a parser for your language to ensure it remains syntactically correct.

If you want to build yourself a language based on C++, you can use the LLVM IR Library and use the Clang compiler to compile your source code. The LLVM IR library is an open source C++ library that allows you to write your own language specifications and generate C++ code from them. Additionally, you can use existing compilers such as GCC to compile your language into executable code.

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