Working with Arrays and Collections

In Windows PowerShell, the terms array and collection are interchangeable. Arrays are data structures for storing a series of values. Using arrays, you can group related sets of data together, and PowerShell doesn’t care whether the data you group is like-typed or not. For example, although you can group sets of numbers, strings, or objects in separate arrays, you also can combine values of different types in the same array.

The most common type of array you’ll use is a one-dimensional array. A one-dimensional array is like a column of tabular data, a two-dimensional array is like a spreadsheet with rows and columns, and a three-dimensional (3-D) array is like a 3-D grid.