/usr/share/GNUstep/Documentation/User/GNUstep/gnustep-faq/What-is-the-Objective-C-Runtime_003f.html is in gnustep-make-doc 2.6.6-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
<head>
<title>Untitled Document: What is the Objective C Runtime?</title>
<meta name="description" content="Untitled Document: What is the Objective C Runtime?">
<meta name="keywords" content="Untitled Document: What is the Objective C Runtime?">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link href="index.html#Top" rel="start" title="Top">
<link href="GNU-Objective-C-Compiler-and-Runtime.html#GNU-Objective-C-Compiler-and-Runtime" rel="up" title="GNU Objective C Compiler and Runtime">
<link href="GNUstep-Base-Library.html#GNUstep-Base-Library" rel="next" title="GNUstep Base Library">
<link href="GNU-Objective-C-Compiler-and-Runtime.html#GNU-Objective-C-Compiler-and-Runtime" rel="prev" title="GNU Objective C Compiler and Runtime">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.smallquotation {font-size: smaller}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.indentedblock {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
div.smalldisplay {margin-left: 3.2em}
div.smallexample {margin-left: 3.2em}
div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
div.smalllisp {margin-left: 3.2em}
kbd {font-style:oblique}
pre.display {font-family: inherit}
pre.format {font-family: inherit}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
pre.smalldisplay {font-family: inherit; font-size: smaller}
pre.smallexample {font-size: smaller}
pre.smallformat {font-family: inherit; font-size: smaller}
pre.smalllisp {font-size: smaller}
span.nocodebreak {white-space:nowrap}
span.nolinebreak {white-space:nowrap}
span.roman {font-family:serif; font-weight:normal}
span.sansserif {font-family:sans-serif; font-weight:normal}
ul.no-bullet {list-style: none}
-->
</style>
</head>
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
<a name="What-is-the-Objective-C-Runtime_003f"></a>
<div class="header">
<p>
Previous: <a href="GNU-Objective-C-Compiler-and-Runtime.html#GNU-Objective-C-Compiler-and-Runtime" accesskey="p" rel="prev">GNU Objective C Compiler and Runtime</a>, Up: <a href="GNU-Objective-C-Compiler-and-Runtime.html#GNU-Objective-C-Compiler-and-Runtime" accesskey="u" rel="up">GNU Objective C Compiler and Runtime</a> </p>
</div>
<hr>
<a name="What-is-the-Objective-C-Runtime_003f-1"></a>
<h4 class="subsection">1.3.1 What is the Objective C Runtime?</h4>
<p>The Objective C Runtime Library provides C functions and data structures
required to execute an Objective C program.
</p>
<p>The GNU Objective C Runtime Library offers everything NeXT’s runtime
does, including Categories, Protocols, ‘<samp>+poseAs:</samp>’, thread-safety,
class initialization on demand, delayed loading of classes, and
initialization of static instances (such as @""-style string objects).
</p>
<p>It also has several differences over NeXT’s implementation:
</p>
<ul>
<li> GNU’s runtime provides “selector-types” along with each
selector; NeXT’s does not. A selector-type is a string that describes
the C variable types for the method’s return and argument values. Among
other uses, selector-types is extremely helpful for fast distributed
objects implementations, (see GNUstep Base Library Section, below).
</li><li> Many of the GNU functions have different names than their
corresponding NeXT functions; the GNU names conform to the GNU coding
standards. The GNUstep base library contains a compatibility header that
works with both runtimes. You should use functions there or use OpenStep
Foundation methods/functions instead of the basic
runtime functions so that you code can run with either system.
<p>Apple has recently added new functionality to their runtime, including
built-in exception handling, etc. Hopefully these will be ported to the
GNU runtime in the future.
</p>
</li></ul>
</body>
</html>
|