Original article was published by Dasaradh S K on Artificial Intelligence on Medium
Structs, arrays, slices, and maps
structs are collections of fields. They’re useful for grouping data together to form records.
Struct fields are accessed using a dot. Below is an example of the struct.
var a int declares a variable as an array of 10 integers. Arrays cannot be resized, because an array’s length is part of its type.
We can set a value at an index using the
array[index] = value , and get value with
Arrays can also be declared and initialized in one line. By default an array is zero-valued
A slice is formed by specifying two indices, a low and high bound, separated by a colon
a[low : high]
Unlike an array which has a fixed size, a slice is dynamically-sized. Slices are much more common than arrays.
append function, adds one or more new values to the slice.
Maps are Go’s built-in associative data type (called dicts in some languages). A map maps keys to values. To create an empty map, use the builtin make:
Key/value can be set using
name[key] = val syntax. The value for a key can be get using
Printing a map will show all of its key/value pairs. Below is an example of using maps.