Node.jsv8。Serializer.writeUint32()方法

原文:https://www . geesforgeks . org/node-js-V8-serializer-writeuint32-method/

v8。Serializer.writeUint32()方法是 v8 的内置应用编程接口。序列化程序模块，用于将原始 32 位整数值写入内部缓冲区。用于自定义序列化程序内部。_writeHostObject()。

语法:

v8.Serializer.writeUint32( value );


参数:该方法接受如上所述和如下所述的单个参数。

• Value: is a required parameter, which refers to a 32-bit integer written into the internal buffer.

返回值:这个方法不返回任何东西，而是将一个原始的 32 位整数值写入内部缓冲区。

下面的例子说明了 v8 的使用。Node.js 中的 Serializer.writeUint32()方法:

例 1:

文件名:

// Accessing v8 module
const v8 = require('v8');
const serializer = new v8.Serializer();
// Calling v8.serializer.writeUint32() 
// The undefined will be logged in 
// console as this function does not
// return anything
console.log(serializer.writeUint32(5783));
console.log(serializer.releaseBuffer());


使用以下命令运行 index.js 文件:

node index.js


输出:

Undefined



例 2:

文件名:

// Accessing v8 module
const v8 = require('v8');
const serializer = new v8.Serializer();
// Calling v8.serializer.writeUint32() 
console.log(serializer.releaseBuffer());
serializer.writeUint32(29698);
console.log(serializer.releaseBuffer());
// Writing two 32 bits number one
// after another
console.log("writing two 32 bits "
    + "number one after another");
serializer.writeUint32(29698);
serializer.writeUint32(29698);
console.log(serializer.releaseBuffer());
console.log("reading after write");
// Calling v8.serializer.writeUint32() 
serializer.writeUint32(5783);
// Calling v8.deserializer.readUint32() 
const deserializer = new 
    v8.Deserializer(serializer.releaseBuffer());
console.log(deserializer.readUint32());


使用以下命令运行 index.js 文件:

node index.js


输出:



writing two 32 bits number one after another

reading after write
5783


参考:T2【https://nodejs . org/API/V8 . html # V8 _ serializer _ writeuint32 _ value