Go Systems Programming

Slices

You'll not find the concept of slice in many programming languages, despite the fact that it is both smart and handy. A slice has many similarities with an array, and it allows you to overcome the shortcomings of an array.

Slices have a capacity and length property, which are not always the same. The length of a slice is the same as the length of an array with the same number of elements and can be found using the len() function. The capacity of a slice is the current room that has been allocated for this particular slice and can be found with the cap() function. As slices are dynamic in size, if a slice runs out of room, Go automatically doubles its current length to make room for more elements.

As slices are passed by reference to ...