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I will never forget having learned about digital filters from the classic Digital Signal Processing books of the 1970s (Oppenheim and Schafer, etc.) and then finding Hamming's Digital Filters book, and wondering why all the classic texts made the topic so hard to understand when Hamming could make it so easy to…

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Systems & Performance 1 Networking & Internet 1

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"Doors" in Solaris: Lightweight RPC Using File Descriptors (1996)

2024128 points103 comments Systems & Performance details

A door is a "file" descriptor used to describe a procedure in a process and optionally some additional state associated with the procedure. Doors were initially designed as Spring object descriptors used to encapsulate the state and capabilities of C++ objects. A process which obtains a door is free to pass it, along…