Extraction
1 Extract the longest word(s) from a line (string). 2001.01.27
2 Extract the shortest word(s) from a line (string). 2001.01.27

3 Extract part from a given URL. 2001.05.18
4 Extract (1) hostname (2) domain name (3) last part from a FQDN. 2000.10.25
5 Extract user names only from e-mail addresses destined to some domain. 2003.11.04

6 Extract double-quoted strings from a line. 2000.10.25
7 Extract the 4-digit integers from a string. 2000.11.08

8 Extract every matched string. 2008.01.31
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