Chapter 4

Activities

1. It’s all about memory. As we mentioned, the stack has limited space, and value-type objects are held in the stack. Therefore, it makes sense to conserve memory as much as possible while being transparent to the human writing the code. [Int64] type objects take up twice as much space on the stack as [Int32] type objects.
2. MyString has been told to take the contents of MyVariable, the integer 42, and treat it as a string. We can subsequently put an integer in MyString, because we didn’t constrain it in any way when we created it.

   Doing it the other way around, with [string]$MyOtherString, constrains MyOtherString to only be able to contain strings.

Exercises

1. There’s a space in there – spaces aren’t allowed. If we really must use a space in the variable name, then we must enclose it in curly braces – {My Variable}, which is arguably more work than using a variable name that doesn’t include a...