node.js - how to write an array to file
javascript, node.js
Solution
If it's a huuge array and it would take too much memory to serialize it to a string before writing, you can use streams:
var fs = require('fs');
var file = fs.createWriteStream('array.txt');
file.on('error', function(err) { /* error handling */ });
arr.forEach(function(v) { file.write(v.join(', ') + '\n'); });
file.end();
Problem
I have a sample array as follows ``` var arr = [ [ 1373628934214, 3 ], [ 1373628934218, 3 ], [ 1373628934220, 1 ], [ 1373628934230, 1 ], [ 1373628934234, 0 ], [ 1373628934237, -1 ], [ 1373628934242, 0 ], [ 1373628934246, -1 ], [ 1373628934251, 0 ], [ 1373628934266, 11 ] ] ``` I would like to write this array to a file such as I get a file as follows ``` 1373628934214, 3 1373628934218, 3 1373628934220, 1 ...... ...... ```