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## # Select() examines the I/O descriptor sets who are passed in # +read_array+, +write_array+, and +error_array+ to see if some of their descriptors are # ready for reading, are ready for writing, or have an exceptions pending. # # If +timeout+ is not nil, it specifies a maximum interval to wait # for the selection to complete. If timeout is nil, the select # blocks indefinitely. # # +write_array+, +error_array+, and +timeout+ may be left as nil if they are # unimportant

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