Ruby 2.0.0 リファレンスマニュアル > ライブラリ一覧 > cursesライブラリ > Cursesモジュール > timeout=
timeout=(delay)
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Sets block and non-blocking reads for the window. - If delay is negative, blocking read is used (i.e., waits indefinitely for input). - If delay is zero, then non-blocking read is used (i.e., read returns ERR if no input is waiting). - If delay is positive, then read blocks for delay milliseconds, and returns ERR if there is still no input.