Sparkline in unicode: Difference between revisions

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 Or, by composition of pure functions, with type comments for the reader, rather than the compiler.
-To vary the approach, the block index value is derived here as an option type,
+To vary the approach, the block used is derived from the option type (<code>Just x | Nothing</code>) result of a search over 7 zero-indexed lower bounds [0..6].
+If a lower bound whose value exceeds that of the data point is found, we just use the index of that bound.
-in a search over 7 zero-indexed lower bounds [0..6].
+If the search result is 'not found' (Nothing), then we use the highest (nominally 8th) block.
-The index used is either just that of the first bound which exceeds the given data value,
-or 7, if the search result was 'not found' (Nothing).
 <lang python>import re