87 lines
4.1 KiB
HTML
87 lines
4.1 KiB
HTML
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<!-- This manual documents Guile version 3.0.10.
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Copyright (C) 1996-1997, 2000-2005, 2009-2023 Free Software Foundation,
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Copyright (C) 2021 Maxime Devos
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Copyright (C) 2024 Tomas Volf
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<title>Interactive Programming (Guile Reference Manual)</title>
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<div class="section-level-extent" id="Interactive-Programming">
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Next: <a href="Supporting-Multiple-Languages.html" accesskey="n" rel="next">Supporting Multiple Languages</a>, Previous: <a href="Guile-and-the-GNU-Project.html" accesskey="p" rel="prev">Guile and the GNU Project</a>, Up: <a href="Introduction.html" accesskey="u" rel="up">Introduction</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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<h3 class="section" id="Interactive-Programming-1"><span>1.4 Interactive Programming<a class="copiable-link" href="#Interactive-Programming-1"> ¶</a></span></h3>
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<p>Non-free software has no interest in its users being able to see how it works.
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They are supposed to just accept it, or to report problems and hope that the
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source code owners will choose to work on them.
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</p>
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<p>Free software aims to work reliably just as much as non-free software does, but
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it should also empower its users by making its workings available. This is
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useful for many reasons, including education, auditing and enhancements, as well
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as for debugging problems.
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</p>
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<p>The ideal free software system achieves this by making it easy for interested
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users to see the source code for a feature that they are using, and to follow
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through that source code step-by-step, as it runs. In Emacs, good examples of
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this are the source code hyperlinks in the help system, and <code class="code">edebug</code>.
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Then, for bonus points and maximising the ability for the user to experiment
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quickly with code changes, the system should allow parts of the source code to
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be modified and reloaded into the running program, to take immediate effect.
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</p>
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<p>Guile is designed for this kind of interactive programming, and this
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distinguishes it from many Scheme implementations that instead prioritise
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running a fixed Scheme program as fast as possible—because there are
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tradeoffs between performance and the ability to modify parts of an already
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running program. There are faster Schemes than Guile, but Guile is a GNU
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project and so prioritises the GNU vision of programming freedom and
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experimentation.
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</p>
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