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Full Discussion: Understanding an example of perl map() function
Top Forums Shell Programming and Scripting Understanding an example of perl map() function Post 303003548 by yifangt on Friday 15th of September 2017 02:28:30 PM
Old 09-15-2017
the regex and the curly bracket with map()
Thanks!
Let's skip the @ARGV and the foreach loop which seems not that confusing to me.
I am aware of perl normally omits the default $_, so that I dissect the map{} as complex statements because map{/(.*)\//, $_; $1} is with the curly bracket {}, not the round ().
Take the first folder "1_test.trim/level.csv" as example. I tried to understand it with two steps.
I am not quite clear with your output[N] = $1.
First is map(/(.*)\//, $_). I thought
$0 = 1_test.trim/level.csv # similar to $0 in awk, not accurate but to give some idea for parsing. So I changed to give the correct part
$1 = 1_test.trim/ #"Not "1_test" at the original post after I struggled with this part that level.csv is skipped/omitted!
Is this correct?


Last edited by yifangt; 01-23-2018 at 12:09 PM..
 

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GRUB-RENDER-LABEL(1)                                               User Commands                                              GRUB-RENDER-LABEL(1)

NAME

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SYNOPSIS

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DESCRIPTION

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