Powershell split not returning expected result

Question

Powershell 5.1.1 returns an unexpected result when I use the split function on a string.

So for example:

"some_user@domain.s483.hgy.i.lo.uk".split("@domain.")[-1]
>> uk

I would expect to see domain.hgy.i.lo.uk and not uk!

Is this a bug or am I missing something here? This appears to work on later versions of powershell. Can someone explain?

Answer 1

Use -split operator as follows:

"some_user@domain.s483.hgy.i.lo.uk" -split [regex]::Escape("@domain.")

some_user
s483.hgy.i.lo.uk

If you insist upon the Split() method then use

 "some_user@domain.s483.hgy.i.lo.uk".Split([string[]]'@domain.',[System.StringSplitOptions]::None)

some_user
s483.hgy.i.lo.uk

The latter is based on familiarity with a list of the different sets of arguments that can be used with Split() method:

''.split

OverloadDefinitions
-------------------
string[] Split(Params char[] separator)
string[] Split(char[] separator, int count)
string[] Split(char[] separator, System.StringSplitOptions options)
string[] Split(char[] separator, int count, System.StringSplitOptions options)
string[] Split(string[] separator, System.StringSplitOptions options)
string[] Split(string[] separator, int count, System.StringSplitOptions options)