Maps

• Declare a map of type string-> Vertex (Struct)

var m map[string]Vertex

• Make a map for string -> Vertex

m = make(map[string]Vertex)

• Example

Mutating Maps

• Insert or update an element in map m:

m[key] = elem

• Retrieve an element:

elem = m[key]

• Delete an element:

delete(m, key)

• Test that a key is present with a two-value assignment:

elem, ok = m[key]

• If key is in m, ok is true. If not, ok is false. If key is not in the map, then elem is the zero value for the map's element type.