151 lines
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151 lines
6.9 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>R7RS Standard Libraries (Guile Reference Manual)</title>
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<link href="Concept-Index.html" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="R7RS-Support.html" rel="up" title="R7RS Support">
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<div class="subsection-level-extent" id="R7RS-Standard-Libraries">
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<p>
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Previous: <a href="R7RS-Incompatibilities.html" accesskey="p" rel="prev">Incompatibilities with the R7RS</a>, Up: <a href="R7RS-Support.html" accesskey="u" rel="up">R7RS Support</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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<h4 class="subsection" id="R7RS-Standard-Libraries-1"><span>7.7.2 R7RS Standard Libraries<a class="copiable-link" href="#R7RS-Standard-Libraries-1"> ¶</a></span></h4>
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<p>The R7RS organizes the definitions from R5RS into modules, and also adds
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a few new definitions.
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</p>
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<p>We do not attempt to document these libraries fully here, as unlike
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R6RS, there are few new definitions in R7RS relative to R5RS. Most of
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their functionality is already in Guile’s standard environment. Again,
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the expectation is that most Guile users will use the well-known and
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well-documented Guile modules; these R7RS libraries are mostly useful to
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users who want to port their code to other R7RS systems.
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</p>
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<p>As a brief overview, we note that the libraries defined by the R7RS are
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as follows:
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</p>
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<dl class="table">
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<dt><code class="code">(scheme base)</code></dt>
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<dd><p>The core functions, mostly corresponding to R5RS minus the elements
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listed separately below, but plus SRFI-34 error handling
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(see <a class="pxref" href="SRFI_002d34.html">SRFI-34 - Exception handling for programs</a>), bytevectors and bytevector ports
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(see <a class="pxref" href="Bytevectors.html">Bytevectors</a>), and some miscellaneous other new procedures.
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</p></dd>
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<dt><code class="code">(scheme case-lambda)</code></dt>
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<dd><p><code class="code">case-lambda</code>.
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</p></dd>
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<dt><code class="code">(scheme char)</code></dt>
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<dd><p>Converting strings and characters to upper or lower case, predicates for
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if a characer is numeric, and so on.
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</p></dd>
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<dt><code class="code">(scheme complex)</code></dt>
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<dd><p>Constructors and accessors for complex numbers.
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</p></dd>
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<dt><code class="code">(scheme cxr)</code></dt>
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<dd><p><code class="code">cddr</code>, <code class="code">cadadr</code>, and all that.
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</p></dd>
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<dt><code class="code">(scheme eval)</code></dt>
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<dd><p><code class="code">eval</code>, but also an <code class="code">environment</code> routine allowing a user to
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specify an environment using a module import set.
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</p></dd>
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<dt><code class="code">(scheme file)</code></dt>
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<dd><p><code class="code">call-with-input-file</code> and so on.
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</p></dd>
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<dt><code class="code">(scheme inexact)</code></dt>
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<dd><p>Routines that operate on inexact numbers: <code class="code">sin</code>, <code class="code">finite?</code>,
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and so on.
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</p></dd>
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<dt><code class="code">(scheme lazy)</code></dt>
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<dd><p>Promises.
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</p></dd>
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<dt><code class="code">(scheme load)</code></dt>
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<dd><p>The <code class="code">load</code> procedure.
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</p></dd>
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<dt><code class="code">(scheme process-context)</code></dt>
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<dd><p>Environment variables. See <a class="xref" href="SRFI_002d98.html">SRFI-98 Accessing environment variables.</a>. Also, <code class="code">commmand-line</code>,
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<code class="code">emergency-exit</code> (like Guile’s <code class="code">primitive-_exit</code>), and
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<code class="code">exit</code>.
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</p></dd>
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<dt><code class="code">(scheme r5rs)</code></dt>
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<dd><p>The precise set of bindings exported by <code class="code">r5rs</code>, but without
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<code class="code">transcript-off</code> / <code class="code">transcript-on</code>, and also with the
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auxiliary syntax definitions like <code class="code">_</code> or <code class="code">else</code>. See <a class="xref" href="Syntax-Rules.html">Syntax-rules Macros</a>, for more on auxiliary syntax.
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</p></dd>
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<dt><code class="code">(scheme read)</code></dt>
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<dd><p>The <code class="code">read</code> procedure.
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</p></dd>
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<dt><code class="code">(scheme repl)</code></dt>
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<dd><p>The <code class="code">interaction-environment</code> procedure.
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</p></dd>
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<dt><code class="code">(scheme time)</code></dt>
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<dd><p><code class="code">current-second</code>, as well as <code class="code">current-jiffy</code> and
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<code class="code">jiffies-per-second</code>. Guile uses the term “internal time unit”
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for what R7RS calls “jiffies”.
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</p></dd>
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<dt><code class="code">(scheme write)</code></dt>
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<dd><p><code class="code">display</code>, <code class="code">write</code>, as well as <code class="code">write-shared</code> and
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<code class="code">write-simple</code>.
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</p></dd>
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</dl>
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<p>For complete documentation, we advise the interested user to consult the
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R7RS directly (see <a data-manual="r7rs" href="../r7rs_html/R7RS.html#R7RS">R7RS</a> in <cite class="cite">The Revised^7 Report on the
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Algorithmic Language Scheme</cite>).
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</p>
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</div>
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<hr>
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<div class="nav-panel">
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<p>
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Previous: <a href="R7RS-Incompatibilities.html">Incompatibilities with the R7RS</a>, Up: <a href="R7RS-Support.html">R7RS Support</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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</div>
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</body>
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