Go Arrays

Introduction to Go Arrays

In Go, an array is a collection of elements that stores data of the same type. Arrays are of fixed length, meaning once defined, their size cannot be changed. They are defined by specifying the type of elements they will hold and the number of these elements.

Initializing Arrays

Arrays can be initialized in multiple ways. You can either initialize an array at the time of declaration or later by assigning values to individual indices.

Accessing Array Elements

Array elements can be accessed using zero-based indexing. You can retrieve or update the values at specific positions using their indices.

Iterating Over Arrays

To iterate over an array, you can use a simple for loop or Go's range keyword, which is more idiomatic and convenient.

Array Length and Capacity

The length of an array in Go is determined using the len() function. Since arrays are of fixed length, their capacity is always equal to their length.

Multidimensional Arrays

Go supports multidimensional arrays, which are essentially arrays of arrays. These can be used to represent data in a matrix or grid format.

Conclusion

Arrays in Go are fundamental data structures that offer a way to store collections of items of the same type. While they are fixed in size, they provide a robust way to handle data collections that do not require dynamic resizing. For more flexibility in size, consider using slices, which will be discussed in the next post.