|laziness, impatience, and hubris|
Re: Defining substring matchesby BrowserUk (Pope)
|on Sep 21, 2013 at 00:42 UTC||Need Help??|
I wish to use the substr() function to search for the particular motif.#
substr is *not* designed for (nor capable of) searching for anything; so why are you specifying that particular function?
You've defined your IUPAC codes in terms of regex character classes; so why are you eschewing the regex engine?
Given your table, it is trivial to convert IUPAC codes into a regex and use the regex engine to search your fasta file:
NB: The above is untested code typed directly into my browser.
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