September 2017 Update

Task/Binary-digits/Jq/binary-digits.jq

@@ -0,0 +1,10 @@
+def binary_digits:
+  if . == 0 then "0"
+  else [recurse( if . == 0 then empty else ./2 | floor end ) % 2 | tostring]
+    | reverse
+    | .[1:]     # remove the leading 0
+    | join("")
+  end ;
+
+# The task:
+(5, 50, 9000) | binary_digits