Let's say I have the following scenario: An IP address is linked to a particular string and I want to match an action.
Example:
IP address: 1.1.1.1 String: "Home" IP address: 5.5.5.5 String: "Work"
if($IP -eq 1.1.1.1)
{
#Do something with "Home"
}
What would I be needing to use to have 'pretty' code instead of multiple if loops ?
The easiest thing to do here is to create a lookup Hashtable where IP's are the keys, and the corresponding strings are the values:
$lookupIP = @{
'1.1.1.1' = 'Home'
'5.5.5.5' = 'Work'
# etcetera
}
Now, if you have an ip in a variable, simply do
$ip = '1.1.1.1'
# Do something with the corresponding string
Write-Host "$ip will do something with $($lookupIP[$ip])"
If you like, you can add a test first to see if the $ip can be found in the lookup table:
if ($lookupIP.ContainsKey($ip)) {
Write-Host "$ip will do something with $($lookupIP[$ip])"
}
else {
Write-Warning "IP '$ip' was not found in the hashtable.."
}
$lookupIP[$ip] will print Home if the value of $ip was '1.1.1.1', and it prints Work when the value of $ip was '5.5.5.5'