Error Handling in Go is bit different than traditional way you must have seen in programming in languages like JavaScript . Instead of traditional “Try/Catch” Go use something called error as values. Go, like most statically-typed languages, mandates that you define the return type of your functions. In order to understand Error handling we must first understand return types . Let’s dive in by creating a basic function, demoFunc, that accepts a string argument and returns it in all lowercase letters.

While arrays and slices form the core of sequential data structures, maps, interfaces, and structs offer unique capabilities, especially when transitioning from a language like TypeScript. Lets talk about them today. Maps: Go’s Key-Value Store: 🔗A map in Go is a composite type that represents a hash table or a dictionary or object/map in typescript’s case. It associates keys and values where each key maps to a unique value. The key can be of any type for which the equality operation is defined, such as integers, floats, strings, etc.