Process and Thread Set Operations

You can use the following operations on process and thread sets:

Set Operators
Operation	Represents	Action
`+`	Set union	Takes two sets `S1` and `S2` and returns a set whose elements are either in `S1` or in `S2`.
`-`	Difference	Takes two sets `S1` and `S2` and returns a set whose elements are in `S1` but not in `S2`.
unary `-`	Negation	Takes a single set `S` and returns the difference of `[*]` and `S`.

Example

The following example demonstrates these three operations:

(idb) set $set1 = [:10, 15:18, 20:]  
(idb) set $set2 = [10:16, 19]  
(idb) set $set3 = $set1 + $set2  
(idb) print $set3 
[*]
(idb) print $set3 - $set2  
[:9, 17:18, 20:]
(idb) print -$set2  
[:9, 17:18, 20:]