How to define variable length array in golang

Go language provides an array type data structure.

An array is a sequence of numbered and fixed-length data items of the same unique type, which can be any primitive type such as an integer, a string, or a custom type.

Declare arrays

Go language array declaration needs to specify the element type and number of elements. The syntax format is as follows:

var variable_name [SIZE] variable_type

The above is the definition of one-dimensional array. For example, the following defines an array balance with a length of 10 and a type of float32:

var balance [10] float32

Initializing the array

The following demonstrates array initialization:

var balance = [5]float32{1000.0, 2.0, 3.4, 7.0, 50.0}

Initializes the number of elements in {} in the array The number cannot be greater than the number in [].

Golang variable length array:

If you ignore the number in [] and do not set the array size, the Go language will set the array size according to the number of elements. Size:

var balance = [...]float32{1000.0, 2.0, 3.4, 7.0, 50.0}

For more golang knowledge, please pay attention to the golang tutorial column.

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