Erlang (programming language)/Tutorials/regexp
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Regular Expressions
2> regexp:match("hello world","w.+d").
{match,7,5}
The regular expression, "w.+d" matches the string, "hello world" at location 7 for 5 chars.
9> regexp:sub("10203040","([2|3|4]0)+","01").
{ok,"1001",1}
Makes a substitution, replacing "203040" with "01".