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Benchmark: running inlineArrayLookup, preBuiltArrayLookup, strftimeLoo
+kup, substrLookup, each for at least 2 CPU seconds...
inlineArrayLookup:  2 wallclock secs ( 2.12 usr + -0.01 sys =  2.11 CP
+U) @ 543540.28/s (n=1146870)
...
substrLookup        465374/s           115%           --              
+-14%                -21%
inlineArrayLookup   543540/s           151%          17%              
+  --                 -8%
preBuiltArrayLookup 588310/s           172%          26%              
+  8%                  --

#!/usr/bin/perl -w

...
             'strftimeLookup'   => \&strftimeLookup,
         }
     );