What is an array in Go language?

What is an array in Go language?

In programming languages, an array is a container that can be used to store a set of values ​​of the same type. In Go language, an array is a static data structure that can store a fixed amount of data. Elements of an array can be accessed using an index, starting from 0.

Arrays in the Go language have the following characteristics:

1. Immutable length: Once an array is declared, its length cannot be changed.
2. Can store the same type of data: all elements in the array must be the same type of data.
3. You can use subscripts to access elements in the array: Each element in the array has a unique subscript, and you can use subscripts to access elements in the array. Indexes start counting from 0.
4. Arrays are value types: when an array is assigned to another variable, a new copy of the array is created. Modifications to the copy will not affect the original array.

The following is the syntax for declaring an array in Go language:

var variable_name [size] data_type

where variable_name is the name of the array and size is the length of the array , data_type is the data type of the elements in the array. For example:

var nums [5] int

This statement declares an array named nums, which has 5 elements of type int. Elements in an array can be accessed using indexes. For example, if you want to access the first element in an array, you can use the following syntax:

nums[0]

This will return the first element in the nums array.

In the Go language, you can also use the array literal syntax to initialize an array. This way is more concise and convenient. For example:

nums := [5]int{1, 2, 3, 4, 5}

This code declares an array named nums, which contains the numbers 1 to 5. 5 integers. You can also use ... to let the compiler automatically calculate the length of the array. For example:

nums := [...]int{1, 2, 3, 4, 5}

This code has the same effect as the previous code.

Arrays in Go language can also be traversed using for loops. For example:

for i := 0; i < len(nums); i {

fmt.Println(nums[i])

}

This code will print all elements in the nums array.

To summarize, the array in Go language is a static data structure that can store a fixed number of data of the same type. The length of the array cannot be changed, and the elements of the array can be accessed using indexing. Arrays can also be initialized using array literal syntax. In Go language, you can also use for loop to traverse arrays. Array is a very basic and commonly used data structure, which is very helpful for learning Go language and programming.

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