Re^2: matching the contents of two (2) files

If you're going to abbreviate, abbreviate :-)

my %hash;
@hash{<LAST>} = (); # Death to the undef trick!

exists $hash{$_} or print while <FIRST>;
[download]

Caution: Contents may have been coded under pressure.

Comment on Re^2: matching the contents of two (2) files Download Code

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Re^3: matching the contents of two (2) files by dragonchild (Archbishop) on Mar 11, 2005 at 02:15 UTC
Let's see ... that's about 70 characters. `#234567890#234567890#234567890#234567890 -p BEGIN{@x{+pop}=()}exists$x{$_}\|\|next` [download] That's 39 characters. You have to run it as so from the command line. `perl -p -e 'BEGIN{@x{+pop}=()}exists$x{$_}\|\|next' FIRST.txt LAST.txt > + MISSING.txt` [download] This is really untested code, but it _should_ work. :-) Being right, does not endow the right to be rude; politeness costs nothing. Being unknowing, is not the same as being stupid. Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence. Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.	[reply] [d/l] [select]

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Re^3: matching the contents of two (2) files
by dragonchild (Archbishop) on Mar 11, 2005 at 02:15 UTC

#234567890#234567890#234567890#234567890
-p BEGIN{@x{+pop}=()}exists$x{$_}||next
[download]

perl -p -e 'BEGIN{@x{+pop}=()}exists$x{$_}||next' FIRST.txt LAST.txt >
+ MISSING.txt
[download]

This is really untested code, but it _should_ work. :-)

Being right, does not endow the right to be rude; politeness costs nothing.
Being unknowing, is not the same as being stupid.
Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.

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