Re: Golf: reverse sort /etc/passwd by UID

in reply to Golf: reverse sort /etc/passwd by UID

51:

#          1         2         3         4         5
# 123456789012345678901234567890123456789012345678901
  print sort{($x,$y)=(split(":",$a.$b))[2,8];$y-$x}<>
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First-ever golf, has to be a better solution.

--MidLifeXis

Comment on Re: Golf: reverse sort /etc/passwd by UID Download Code

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Re^2: Golf: reverse sort /etc/passwd by UID by tobyink (Canon) on Feb 06, 2013 at 14:30 UTC
Nice trick with `split`. Can be improved somewhat... `# 1 2 3 4 # 1234567890123456789012345678901234567890123 perl -e'print sort{@x=split":",$a.$b;$x[8]-$x[2]}<>' /etc/passwd` [download] Or even: `# 1 2 3 4 # 123456789012345678901234567890123456789012 perl -e'print sort{(@x=split":",$a.$b)[8]-$x[2]}<>' /etc/passwd` [download] Update: or with a sufficiently outdated Perl... `# 1 2 3 4 # 1234567890123456789012345678901234567890 perl5.8.9 -e'print sort{split":",$a.$b;$_[8]-$_[2]}<>' /etc/passwd` [download] (`split` in void context was deprecated in 5.10 and dropped in 5.12 IIRC.) `package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name`	[reply] [d/l] [select]
Re^3: Golf: reverse sort /etc/passwd by UID by MidLifeXis (Monsignor) on Feb 06, 2013 at 14:31 UTC
D'oh :-) Also, 41 using say. Update: Nice: 40? Update 2: Beat me to the punch on scalar `split` and @_ :-) --MidLifeXis	[reply] [d/l]
Re^2: Golf: reverse sort /etc/passwd by UID (49?) by MidLifeXis (Monsignor) on Feb 06, 2013 at 14:26 UTC
49: s/print/say/ ( I think - don't have a perl > 5.8.8 installed with a passwd file ). --MidLifeXis	[reply]
Re^2: Golf: reverse sort /etc/passwd by UID by Tommy (Chaplain) on Feb 06, 2013 at 15:07 UTC
That. Was. Awesome. ++MidLifeXis Tommy A mistake can be valuable or costly, depending on how faithfully you pursue correction	[reply]

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