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ruby read stdin

Seanzo answered on May 13, 2020 Popularity 8/10 Helpfulness 4/10

answer ruby read stdin

ruby read stdin

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# print all the lines in every file passed via command line that contains login
ARGF.each do |line|
    puts line if line =~ /login/
end

Popularity 8/10 Helpfulness 4/10 Language ruby

Source: stackoverflow.com

Tags: ruby stdin

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Contributed on May 13 2020

Seanzo

0 Answers Avg Quality 2/10

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ruby read from stdin

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## One line: 1 2 3
$stdin.read # => "1 2 3"
$stdin.read # => nil (read again will be nil)


## Multiline:
# 1 2 3
# 4 5 6
$stdin.each do |line|
	# line => "1 2 3"
end

## Example: Save stdin input to variable
input_arr = []
$stdin.each do |line| # line => "1 2 3"
    line = line.split(" ") # line => %w[1 2 3] (array of strings)
    line.each do |num|
        input_arr.push num.to_i
    end
end
# input_arr => %d[1 2 3 4 5 6] (array of int)


## look at source below for further info

Popularity 3/10 Helpfulness 1/10 Language ruby

Source: zetcode.com

Tags: stdin ruby

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Contributed on Mar 21 2023

Comfortable Cheetah

0 Answers Avg Quality 2/10

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ruby read stdin

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ruby read from stdin

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