Do you realize, that 

join('', (/(..)(..)(....)/)[0,1,2])

[download]

does not change a string $_ of length 8 in any way? (Apart from burning CPU cycles...). The regex also does not fit very well when splitting YYYYMMDD into pieces.

In reply to Re^3: sorting dates in YYYYMMDD format by hdb
in thread sorting dates in YYYYMMDD format by learner@perl

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