// Start of program4 process
var fs = require('fs');
// Asyncronously read and send the buffer object of a file whose path
// is set int 2nd argument of the process to the callback function.
var buffer = 0;
fs.readFile(process.argv[2], fileReadCallBack);
while(buffer == 0) {}
var numOfNewLines = buffer.toString().split('\n').length-1;
console.log(numOfNewLines);
// Our callback function for our asyncronous file reading
function fileReadCallBack(err, data) { if(!err){ buffer = data; } }
I'm using NodeSchool.io's workshop <http://nodeschool.io/#workshoppers> to
learn Nodejs. I'm on problem 4, *Async File I/O *and the above code runs
forever. If the file reading is asynchronous, I'm thinking *var buffer*
should no longer be 0 and the while-loop will terminate and move on.
I know the correct solution would place the logic inside of the callback
function, but I'm curious as to why the code above doesn't work as expected.
Thanks!
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