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A comment on Awk in 20 Minutes (2015). Parent comment

Re:Awk in 20 Minutes (2015) by j_z_reeves on Saturday May 02, 2020 @12:38PM (#23052886)
I was surprised by the counts[$1] = counts[$1] + 1, since I didn't think it would correctly coerce a non-existing value to a 0.
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