c = %w(a b c d) 1.8.7 :025 > c.uniq {|x|x[/^a/]} => [\"a\", \"b\"] 1.8.7 :026 > c.uniq {|x|x[/^b/]}
We currently have some data on an HDFS cluster on which we generate reports using Hive. The infrastructure is in the process of being decommissioned and we are left with the task of coming up with an
陈杰辉 2021-01-13 16:42 开发者_开发问答韩语版是曹承衍中文版是王一博
What I have a = [1,2,3,4] => [1, 2, 3, 4] b = a.combination(2).to_a => [[1, 2], [1, 3], [1, 4], [2, 3], [2, 4], [3, 4]]
He all, I have a file having some columns开发者_StackOverflow中文版. I would like to do sort for column 2 then apply uniq for column 1. I found this post talking about sort and uniq for the same colum
>cat testing.txt aaa bbb aaa ccc xxx yyy zzz ppp uuu vvv uuu ttt I want to display the uniq lines based on the first field and output oly the first occurence of the line
Looking to print only lines that have a du开发者_如何学运维plicate first field. e.g. from data that looks like this:
I got a text file with LOTS of names. I wanta list of all the strings(lines) that is eithe开发者_StackOverflow中文版r
What is the difference between the following to commands? sort -u 开发者_JAVA百科FILE sort FILE | uniq
How to make C program wait (on Lin开发者_运维知识库ux)? (I need to use wait with MPI - I need C code please)If you want to wait for a MPI request use MPI_Wait: http://www.manpagez.com/man/3/MPI_Wait/
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