Slices and Maps

Part of the Go course

Every variable you have used so far holds exactly one value: one name, one age, one price. Most real problems involve a group of things: a roster of students, a shopping cart, a lookup table of prices by item name. Go gives you two built-in collection types for exactly this, and you will reach for one of them in almost every program you write from here on.

Picture a slice as a row of labeled boxes on a shelf, numbered starting from 0, each box holding one value of the same type as all the others. You create one with a slice literal, listing the values inside braces: