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Re^5: perl file formatting

by GotToBTru (Prior)
on Jan 13, 2017 at 14:28 UTC ( #1179510=note: print w/replies, xml ) Need Help??


in reply to Re^4: perl file formatting
in thread perl file formatting

tybalt89 showed you how to get the current date in the YYYYMMDD format you need.

use strict; use warnings; my $enddate = todate(); while(<DATA>) { last if ($. > 1 and $enddate < (split /,/)[1]); print $_; } sub todate { my ($year, $month, $day) = (localtime)[5,4,3]; return sprintf "%04d%02d%02d",$year + 1900, $month + 1, $day; } __DATA__ F12,F11,F481,F55,F989 8204B,20161002,1045.469,test,Y 8204,20170112,1064.848,test,Y 8204A,20170113,1064.505,test,Y 8204B,20170114,1045.469,test,Y

$. is a built-in variable that counts lines of input. The split function implicitly operates on the current input line, producing a list (or maybe an array), and we take a slice of that to look at the only field we care about, the date in the second column.

H:\perl>perl 1178418.pl F12,F11,F481,F55,F989 8204B,20161002,1045.469,test,Y 8204,20170112,1064.848,test,Y 8204A,20170113,1064.505,test,Y

Updated: reduced if () {last if()} to just last if().

But God demonstrates His own love toward us, in that while we were yet sinners, Christ died for us. Romans 5:8 (NASB)

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