16 lines
383 B
Text
16 lines
383 B
Text
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func merge_streams(streams) {
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var s = streams.map { |stream|
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Pair(stream, stream.readline)
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}.grep {|p| defined(p.value) }
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gather {
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while (s) {
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var p = s.min_by { .value }
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take(p.value)
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p.value = (p.key.readline \\ s.delete_if { _ == p })
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}
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}
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}
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say merge_streams(ARGV.map {|f| File(f).open_r }).join("\n")
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