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Maps

Collection of Key, value pairs.

All keys and values must be of the same type

Definition​

// Way 1) all keys and values are of type string
colors := map[string]string{
  "red":   "#ff0000",
  "green": "#4bf745",
  "white": "#ffffff",
}

fmt.Println(colors)
// map[green:#4bf745 red:#ff0000]

// Way 2) 
var colors map[string]string
// Way 3)
colors := make(map[string]string)

Adding Properties​

colors["white"] = "#ffffff"

Delete Properties​

delete(colors, "white")

Iteration​

for color, hex := range colors {
  println(color, hex)
}

/*
red #ff0000
green #4bf745
white #ffffff\n*/