Pine Labs Software Engineer Interview Questions and Answers

Arrow functions are more concise and have a lexical 'this' binding compared to normal functions.

• Arrow functions do not have their own 'this' keyword, they inherit it from the parent scope.

• Arrow functions do not have their own 'arguments' object.

• Arrow functions cannot be used as constructors with 'new'.

• Arrow functions are more concise and have implicit return when no curly braces are used.

forEach is used to iterate over an array and perform a function on each element, while map creates a new array by applying a function to each element.

• forEach does not return a new array, while map does

• forEach does not modify the original array, while map creates a new array

• forEach is used for side effects, while map is used for transformation

• Example: forEach - array.forEach(item => console.log(item)), map - const newAr