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BLISS
System Software Implementation Language, Backwards

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general
history

general

nature: systems language

history: BLISS was a systems programming language developed by W.A. Wulf, D.B. Russell, and A.N. Habermann at Carnegie Mellon University in 1970. BLISS was a very popular systems programming language until the rise of C. The original compiler was noted for its optimizing of code. Most of the utilities for DEC’s VMS operating system were written in BLISS-32. BLISS was a typeless language based on expressions rather than statements. Expressions produced values, and possibly caused other actions, such as modification of storage, transfer of control, or looping. BLISS had powerful macro facilities, conditional execution of statements, subroutines, built-in string functions, arrays, and some automatic data conversions. BLISS lacked I/O instructions on the assumption that systems I/O would actually be built in the language.

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