TIMTOWTDI
DB<23> $date = "3-15-1932"
#### split and slice
DB<24> printf "% 4d-%02d-%02d", (split /-/, $date)[2,0,1]
1932-03-15
#### match list
DB<25> printf "% 4d-%02d-%02d", ($date =~ /(\d+)-(\d+)-(\d+)/ )[2,0,
+1]
1932-03-15
#### reorder printf with 3$
DB<26> printf "%3\$ 4d-%02d-%02d", split /-/, $date
1932-03-15
#### classic
DB<27> printf "% 4d-%02d-%02d",$3,$1,$2 if $date =~ /(\d+)-(\d+)-(\d
++)/
1932-03-15
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