[BioRuby] Use of NameError versus respond_to?
Andrew Grimm
andrew.j.grimm at gmail.com
Fri Jul 1 07:40:04 UTC 2011
This isn't a bug report, just a request for enlightenment.
Why does some of the code use begin ... rescue NameError rather than
respond_to ?
For example, in Bio::Alignment::OriginalPrivate#extract_seq, there's
for m in [ :seq, :naseq, :aaseq ]
begin
seq = s.send(m)
rescue NameError, ArgumentError
seq = nil
end
break if seq
end
Is this because some objects implement seq, naseq or aaseq without
indicating it in respond_to?
Or is this just how code was written back in older times?
https://github.com/bioruby/bioruby/commit/7b26a41e0a515e77d4b7470936b7fbf68a7b09a8
indicates the module was first written back in 2003.
Andrew
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