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. 2008.07.30
9 Remove redundant instances from a list. 2010.03.25
N-th Match
1 Extract the N-th through M-th matches of PAT in a file. 2009.09.26
2 Extract contents between parentheses of depth N. 2009.11.14
3 Extract contents between parentheses of depth N, multiline version. 2009.12.09
HTML elements with end tags
1 Extract the contents of N-th elements with a given name in a line. 2009.10.01
HTML elements without end tags
1 Extract every IMG elements from an HTML file. 2009.09.18
2 Extract every IMG elements from an HTML file, with angle brackets properly processed. 2009.09.21
Multiline Issue
1 Extract every matched string outside comments. 2008.08.08
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