vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

jiggzson

var scientificToDecimal = function (num) {
    var nsign = Math.sign(num);
    //remove the sign
    num = Math.abs(num);
    //if the number is in scientific notation remove it
    if (/\d+\.?\d*e[\+\-]*\d+/i.test(num)) {
        var zero = '0',
                parts = String(num).toLowerCase().split('e'), //split into coeff and exponent
                e = parts.pop(), //store the exponential part
                l = Math.abs(e), //get the number of zeros