Node.js Stream writable.writableCorked 属性
writable.writableCorked 属性是 Stream 模块的内置应用程序编程接口,用于检查您需要调用 uncork()函数的次数,以便您可以完全解开流。
句法:
writable.writableCorked
返回值:它返回一个整数值,表示需要调用 writable.uncork() 的次数。
下面的例子说明了在 Node.js 中writable.writableCorked 属性的使用:
示例 1:
// Node.js program to demonstrate the
// writable.writableCorked Property
// Accessing stream module
const stream = require('stream');
// Creating a stream and creating
// a write function
const writable = new stream.Writable({
// Write function with its
// parameters
write: function(chunk, encoding, next) {
// Converting the chunk of
// data to string
console.log(chunk.toString());
next();
}
});
// Calling cork function
writable.cork();
// Writing data
writable.write('hi');
// Again calling cork function
writable.cork();
// Again writing some data
writable.write('GFG');
// Calling writable.writableCorked
// Property
writable.writableCorked;
输出:
2
示例 2:
// Node.js program to demonstrate the
// writable.writableCorked Property
// Accessing stream module
const stream = require('stream');
// Creating a stream and creating
// a write function
const writable = new stream.Writable({
// Write function with its
// parameters
write: function(chunk, encoding, next) {
// Converting the chunk of
// data to string
console.log(chunk.toString());
next();
}
});
// Calling cork function
writable.cork();
// Writing data
writable.write('hi');
// Calling uncork() function
writable.uncork();
// Again calling cork function
writable.cork();
// Again writing some data
writable.write('GFG');
// Calling writable.writableCorked
// Property
writable.writableCorked;
输出:
hi
1
在上面的例子中,我们已经调用了一次 uncork()函数。因此,为了完全解开流,您只需调用一次 uncork()函数,输出为 1。
参考: https://nodejs.org/api/stream.html#stream_writable_writablecorked