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Node.js – v8.deserializer.readUint64() Method
The v8.deserializer.readUint64() method is used for reading a raw 64-bit unsigned integer and return it as an array with its higher and lower value as follows: [hi, lo]. Both the hi and lo will contain the 32-bit unsigned integer.
Syntax
v8.deserializer.readUint64()
Parameters
Since it reads values from the internal buffer, it does not require any input parameters. It will return the array containing the 64-bit integers in two parts as hi and lo.
Example 1
Create a file with the name "readUint64.js" and copy the following code snippet. After creating the file, use the command "node readUint64.js" to run this code.
// v8.serializer.readUint64() Demo Example
// Importing the v8 module
const v8 = require('v8');
// Initializing the serializer object
const serializer = new v8.Serializer();
// Writing a 64-bit integer value to the internal buffer
serializer.writeUint64(12345, 6789);
// Initializing the deserializer object
const deserializer = new
v8.Deserializer(serializer.releaseBuffer());
console.log(deserializer.readUint64());Output
C:\home
ode>> node readUint64.js [12345, 6789]
Example 2
Let’s have a look at one more example
// v8.serializer.readUint64() Demo Example
// Importing the v8 module
const v8 = require('v8');
// Initializing the serializer object
const serializer = new v8.Serializer();
var buffer;
// Writing a 64-bit integer value to the internal buffer
function writeUint64(lo, hi) {
serializer.writeUint64(lo, hi)
buffer = serializer.releaseBuffer()
console.log(buffer)
readUint64(buffer)
}
function readUint64(buffer) {
const deserializer = new v8.Deserializer(buffer);
console.log(deserializer.readUint64(buffer));
}
writeUint64(1234,98765)
writeUint64(12.22, 67788)
writeUint64(999999,111111)Output
C:\home
ode>> node readUint64.js <Buffer cd 83 86 80 a0 9a 01> [1234, 98765] <Buffer cc 91 84 80 c0 01> [12, 67788] <Buffer 87 e4 86 80 f0 c7 d0 07> [999999, 111111]
Updated on: 18-Aug-2021
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