Introduction

Lodash is a JavaScript library that provides utility methods for accomplishing tasks via functional programming. Screeps supports Lodash in its entirety; while using it isn't a requirement, it can make accomplishing some tasks in game substantially easier.

Syntax Basics

In respect to screeps, Lodash is useful when work needs to be performed on an object with numerous properties, or an array populated by objects (that also may have numerous properties). A typical Lodash method takes the form of _.lodashMethod(collection, function) where collection is your object or array, and function is an anonymous function that will be invoked for each iteration on the provided collection.

This syntax is similar to the key arguments supported by some of Python's built in functions like sorted(), min(), max(), and so on.

Lambda Functions

The Lodash Documentation provides a good overview of how to use each method, and what those can be used to accomplish. While helpful examples are provided with each entry, Python's anonymous function syntax via lambdas must be used in place of JavaScript anonymous function syntax.