11 lines
		
	
	
		
			242 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			11 lines
		
	
	
		
			242 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| class IO
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|   def readline_nonblock(sep = $INPUT_RECORD_SEPARATOR)
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|     buffer = ""
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|     buffer.concat(read_nonblock(1)) while buffer[-1] != sep
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|     buffer
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|   rescue IO::WaitReadable, EOFError => e
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|     raise e if buffer.empty?
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|     buffer
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|   end
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| end
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