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hello_world.history
// 1957 - FORTRAN WRITE(*,*) 'Hello, World!' // 1972 - C printf("Hello, World!\n"); // 1995 - Java System.out.println("Hello!"); // 2015 - Rust println!("Hello, World!");
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OADL

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Ross Cunniff's Object/Array Data Language: a dynamically typed, C-like object-oriented language with APL-style array operations, begun in 1997 as the heir to his Adventure Definition Language

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O'Basic

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O'Basic, Celtech Software's shareware desktop script language for Windows 95, a BASIC-like interpreter with built-in system objects, try/catch error handling and a script-to-EXE compiler.

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Obey

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The command-script file type of Acorn's RISC OS: plain text files of star commands, with parameters and a self-locating Obey$Dir, that boot discs and launch every application through its !Run file

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NXC

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John Hansen's Not eXactly C, a C-like language built on the NBC assembler that compiles to the bytecode of LEGO's own NXT firmware: in its creator's words, NQC for the MINDSTORMS NXT

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NU-Prolog

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The University of Melbourne's compiled successor to MU-Prolog, a Prolog that added sound negation, quantifiers, a logical if-then-else and coroutining 'when' declarations, and later served as the bootstrap platform for Mercury

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