Introduction to GoLang

We can declare an empty map using the make() function. Below is the syntax we need to follow:

Here, mapName is the name of the map, keyType is the expected type of the keys, and valueType is the expected type of the values. The term map is a keyword.

We can declare a map called courseData with keys of type string and values of type int.

If we attempt to output this map, we will receive an output indicating an empty map:

We can initialize a map with some data using the following syntax:

Note

You can place or omit spaces in the map declaration syntax; therefore, both map[keyType]valueType and map [keyType] valueType are valid.

Using the above syntax, we can create a map that has some initial data in it:

Which syntax is correct for creating a new empty map?

Select the correct answer

data := map[int]int

var data = make(map[int][int])

data := make(map[int]int)

data := map[string]int { … }

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