Alex Vlasov indifferentalex
indifferentalex
/ stability.rb
Created
May 3, 2018 08:10
Potentially unstable ruby sort vs a sort that is guaranteed to be stable
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| unsorted_array = [21, 12, 47, 41, 33, 11, 13, 31, 43] | |
| puts unsorted_array.sort_by { |n| n.to_s[0] }.to_s | |
| # [12, 13, 11, 21, 33, 31, 47, 43, 41] on Mac OS X, | |
| # [12, 11, 13, 21, 33, 31, 47, 41, 43] on most Linux distributions | |
| puts unsorted_array.sort_by.with_index { |n, i| [n.to_s[0], i] }.to_s | |
| # [12, 11, 13, 21, 33, 31, 47, 41, 43] even on Mac OS X, stability achieved! |
indifferentalex
/ gist:53cd3434174903a4539d0eeec262f510
Created
April 23, 2018 11:40
Find regex across all files of given format and remove all lines in which it is present
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| // Linux | |
| find ./**/*.js | xargs sed -i '/regex/d' | |
| // OS X | |
| find ./**/*.js | xargs sed -i '' '/regex/d' |