How to use the SlowBuffer function from buffer

Find comprehensive JavaScript buffer.SlowBuffer code examples handpicked from public code repositorys.

Buffer.SlowBuffer is a class in Node.js that creates a new buffer object with a fixed size, for use with low-level binary data processing.

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SafeBuffer.allocUnsafeSlow = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return buffer.SlowBuffer(size)
}
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    t.equal(impl.Buffer.from(new Uint8Array([0, 42, 3])).constructor, buffer.Buffer)
    t.equal(impl.Buffer.from([]).constructor, buffer.Buffer)
  });
  [0, 10, 100].forEach(function (arg) {
    t.equal(dangerous.Buffer.allocUnsafe(arg).constructor, buffer.Buffer)
    t.equal(dangerous.Buffer.allocUnsafeSlow(arg).constructor, buffer.SlowBuffer(0).constructor)
  })
  t.end()
})

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How does buffer.SlowBuffer work?

Buffer.SlowBuffer works by creating a new buffer object with a fixed size and the ability to manipulate its contents as binary data.

When called, Buffer.SlowBuffer takes a size parameter as input, which specifies the number of bytes that the buffer should be able to hold.

Unlike the regular Buffer class in Node.js, which uses an underlying memory pool for efficient allocation and deallocation of buffer objects, Buffer.SlowBuffer simply allocates a new block of memory for each buffer instance. This can make it slower and less efficient for processing large amounts of binary data, but can be useful in cases where you need to create a fixed-size buffer without relying on the memory pool.

Once a Buffer.SlowBuffer object has been created, you can manipulate its contents using various methods such as write, read, slice, copy, and fill. These methods allow you to read and write data to and from the buffer, extract parts of the buffer, copy the contents of one buffer to another, and fill the buffer with a specific value.

By using Buffer.SlowBuffer, Node.js developers can work with low-level binary data in a flexible and efficient way, without having to worry about memory management or other low-level details.

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(function (global){
'use strict';


var buffer = require('buffer');
var Buffer = buffer.Buffer;
var SlowBuffer = buffer.SlowBuffer;
var MAX_LEN = buffer.kMaxLength || 2147483647;
exports.alloc = function alloc(size, fill, encoding) {
  if (typeof Buffer.alloc === 'function') {
    return Buffer.alloc(size, fill, encoding);
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Ai Example

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const SlowBuffer = require("buffer").SlowBuffer;

// create a new SlowBuffer object with a size of 8 bytes
const buf = new SlowBuffer(8);

// write some data to the buffer
buf.writeUInt8(0x48, 0);
buf.writeUInt8(0x65, 1);
buf.writeUInt8(0x6c, 2);
buf.writeUInt8(0x6c, 3);
buf.writeUInt8(0x6f, 4);
buf.writeUInt8(0x20, 5);
buf.writeUInt8(0x57, 6);
buf.writeUInt8(0x6f, 7);

// read the data from the buffer and convert it to a string
const str = buf.toString("utf8");

console.log(str);

In this example, we're using Buffer.SlowBuffer to create a new buffer object with a fixed size of 8 bytes. We then use various writeUInt8 methods to write individual bytes of data to the buffer, representing the string "Hello World" in ASCII encoding. Finally, we use the toString method to convert the buffer's contents to a string, which we log to the console. When we run this code, it should output the following: Copy code