Famous Awk One-Liners Explained, Part II: Text Conversion and Substitution

You're replying to a comment by Yogesh Agrawal.

February 09, 2009, 12:10

Hi,
I didnt understand #43 where u say "If it had seen the line before, then a[line] > 0 and !a[line] == 0. Any expression that evaluates to false is a no-op, and any expression that evals to true is equal to “{ print }”. "
Should it be the opposite? Can u explain it in other words?

One more thing in #41 if we have multiple tabs then they will all go vanished. right? we will only get the fields(words)

-yogesh

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