Mengu Kagan mengu

## The Technical Interview Cheat Sheet.md

      
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                tsiege
                / The Technical Interview Cheat Sheet.md
            
            
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              July 14, 2024 15:27
            
              
                This is my technical interview cheat sheet. Feel free to fork it or do whatever you want with it. PLEASE let me know if there are any errors or if anything crucial is missing. I will add more links soon.
              
          
    ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!


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## _reader-macros.md

      
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                chaitanyagupta
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              May 19, 2024 19:25
            
              
                Reader Macros in Common Lisp
              
          
    Reader Macros in Common Lisp

This post also appears on lisper.in.
Reader macros are perhaps not as famous as ordinary macros. While macros are a great way to create your own DSL, reader macros provide even greater flexibility by allowing you to create entirely new syntax on top of Lisp.
Paul Graham explains them very well in [On Lisp][] (Chapter 17, Read-Macros):

The three big moments in a Lisp expression's life are read-time, compile-time, and runtime. Functions are in control at runtime. Macros give us a chance to perform transformations on programs at compile-time. ...read-macros... do their work at read-time.