Golang

Go favors Composition over Inheritance. By embedding structs inside other structs, you automatically promote fields and methods without the rigid coupling of object-oriented class hierarchies.

Go is a pass-by-value language. When you pass an argument to a function, Go creates a copy. Pointers allow you to share memory directly across function boundaries without copying large data structures.

Go is not a class-based object-oriented language. Instead, Go uses Structs to group typed fields together into contiguous memory blocks.

Maps provide fast $O(1)$ key-value lookups. Understanding map initialization and comma-ok lookups is essential for safe data manipulation.

In Go, an Array has a fixed length determined at compile time. A Slice is a lightweight, dynamically sized view into an underlying array. Understanding slice capacity (cap) prevents accidental memory reallocation overhead.

Functions in Go can return multiple values natively. Coupled with the defer statement, Go provides a clean, elegant mechanism for resource management that replaces cumbersome try/finally blocks.

Unlike languages with while, do-while, and foreach, Go has only ONE keyword for looping: for. This design eliminates syntax complexity while maintaining complete control over iteration.

Designed at Google by Robert Griesemer, Rob Pike, and Ken Thompson, Go (Golang) is an open-source programming language built for simplicity, concurrency, and high-performance systems engineering.