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c:\test>perl -mstrict -we"1;"

c:\test>perl -mstrict -we"2;"
Useless use of a constant in void context at -e line 1.

while( 1 ) {...
... if 1;
1 while ....;

timethese -1, {
    trivial1  => sub {1},
...
 for at least 1 CPU seconds
...
[Range iterator outside integer range at (eval 57) line 1, <STDIN> lin
+e 7.