I have some txt file to process, their structure as
jason_one 1999-2-2 firstname.lastname@example.org 26
jane 2000-3-32 email@example.com 24
jason_two 1998-12-22 firstname.lastname@example.org 26
each file has about 30,000 records, even more,I want to:
1. sort records by email domain in a file,such as "hotmail.com".
2. delete repeated record(email repeated) in a file.
3. merge two file to a new file,ignore the repeated record.
how can i do that efficiently? TStringList?? TList? TMemo?