Converting strings to numbers is extremely common. The easiest and fastest (jsPerf) way to achieve that would be using the
+ (plus) operator.
var one = '1'; var numberOne = +one; // Number 1
You can also use the
- (minus) operator which type-converts the value into number but also negates it.
var one = '1'; var negativeNumberOne = -one; // Number -1
You might have heard about the old ways gaining hype recently, and we don’t mean praying to the gods of the north. Today we’re introducing a feature found in Clojure which allows you to define interfaces for your classes.
Sometimes we need to whitelist certain attributes from an object, say we’ve got an array representation of a database table and we need to
selectjust a few fields for some function.