Overview

Arrays

• var <name> [<length>]int
• len & cap from builtin
• zero values?

Slices

• var <name> []int
• References to underlying array
• append
  • Eg. append(s, <element1>, <element2>, ...)
  • You have to assign it back to s or whatever is your slice variable name
  • Can have a different behavior depending on capacity
• make([]<type>, len, cap)
• make([]<type>, lenAndCap)
• zero value?

Intro to structs

• Store related fields of different types
• struct keyword
  • Usage along with type keyword
  • Anonymous structs
• Struct Literal syntax

Maps

• map keyword
  • map[<keyType>]<valType>
• make(map[string]Person)
• len only
• delete
  • Eg. delete(m, <key>)
• lookup returns 2 values - val, ok
• zero value?
• They need to be initialized before usage either with make or map literal syntax: map[string]Person{}

Custom

• generics are coming in Go 2!
• Till then rely on interface{} or implement a DS for specific types