From 42642e7b13ad79bde76b6fefad825675dad9c61e Mon Sep 17 00:00:00 2001
From: Pjotr Prins
Date: Thu, 31 Dec 2020 14:34:59 +0000
Subject: Add comment

---
 workflows/pull-data/genbank/sparql-fetch-ids | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/workflows/pull-data/genbank/sparql-fetch-ids b/workflows/pull-data/genbank/sparql-fetch-ids
index 683044c..d4743bd 100755
--- a/workflows/pull-data/genbank/sparql-fetch-ids
+++ b/workflows/pull-data/genbank/sparql-fetch-ids
@@ -30,6 +30,10 @@ def sparql q, transform = nil
   vars = data['head']['vars']
   results = data['results']['bindings']
   results.map { |rec|
+    # return results after transforming to a Hash and applying the
+    # optional transform lambda. Note the transform can not only
+    # reduce results, or create an array, but also may transform into
+    # an OpenStruct.
     res = {}
     vars.each { |name|
       res[name.to_sym] = rec[name]['value']
-- 
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