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## Today's Learning.md

      
        
          
            
              
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                alexaltair
                / Today's Learning.md
            
            
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              December 18, 2015 17:38
            
              
                An exploration of infinite lists.
              
          
        
      
        
  
      
    The first thing that really surprised me today was the flexibility of Ruby's shovel operator, <<. A student in the class had tried the following:
a = [0]
a << a
What do you think a is now? I was sure it would be [0, [0]]. But lo and behold, Ruby sparkles;
a = [0]
a &lt;&lt; a