expressions clarification

Dino Edwards dino.edwards at
Wed Mar 2 15:06:55 CET 2016

I'm trying to figure out what the difference between the following expressions are:

[qr'.\.(mdb)$'ix => 0]
[qr'.\.(uue)$'i => 0]
[qr'^\.(lha)$' => 0]

Mainly, trying to figure out when you put in "ix", "i" or nothing at all at the end of the expression.


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