Deleting specific string lines of items in array Ruby

Question

I have an array of 10 items containing of a several lines string like

one string
two string
some string
any string

I want to delete lines containing words some and two. I made code like that:

search_text_domain = %r{some|two}
    groups_data.each do |line|
        line.each_line do |num|
        domain_users_name << (num) unless num =~ search_text_domain
        end
    end

It works fine but it puts all lines to one big array like domain_users_name = ["one string", "any string", "big string", "another_s....] and I want tu put it in array of arrays like

domain_users_name = [["one string", "any string"], ["big string", ""another_s...."], [........

I need version that permanently modify groups_data array. Any ideas?

And if one string of the subarray contains "some" or "two", should the whole subarray be discarded or should just that one string? — ndnenkov
– ndnenkov, Commented Feb 13, 2017 at 13:49

Aleksei Matiushkin · Accepted Answer · 2017-02-13 14:10:01Z

1

input = ["one string\ntwo string\nsome string\nany string",
         "one string\ntwo string\nsome string\nany string"]


input.map { |a| a.split("\n").reject { |e| e =~ %r{some|two} } }

# or
# input.map { |a| a.each_line.map(&:strip).reject { |e| e =~ %r{some|two} } }

# or (smiley-powered version, see the method’s tail)
# input.map { |a| a.each_line.map(&:strip).reject(&%r{some|two}.method(:=~)) }

#⇒ [["one string", "any string"], ["one string", "any string"]]

answered Feb 13, 2017 at 14:10

Aleksei Matiushkin

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Comments

Pascal · Accepted Answer · 2017-02-13 13:51:17Z

0

So you want to delete a group if one of the group elements matches the filter regexp?

groups = [['some', 'word'], ['other', 'word'], ['unrelated', 'list', 'of', 'things']]

filter = %r{word|some}
filtered = groups.delete_if do |group|
  group.any? do |word|
    word =~ filter
  end
end

p filtered

Does this do what you want?

answered Feb 13, 2017 at 13:51

Pascal

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1 Comment

mila002 Over a year ago

Items of original array looks like array = ["one string\nsecond string", "other string\nother other string] - there are new lines. And I want to delete lines containing of specific words and after deleting e.g. line with wird secon get array = ["one string", "other string\nother other string"]

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