64 lines
3.2 KiB
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64 lines
3.2 KiB
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<title>The Print Command with Objective-C - Debugging with GDB</title>
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<link rel="up" href="Objective_002dC.html#Objective_002dC" title="Objective-C">
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<link rel="prev" href="Method-Names-in-Commands.html#Method-Names-in-Commands" title="Method Names in Commands">
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<div class="node">
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<a name="The-Print-Command-with-Objective-C"></a>
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<a name="The-Print-Command-with-Objective_002dC"></a>
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<p>
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Previous: <a rel="previous" accesskey="p" href="Method-Names-in-Commands.html#Method-Names-in-Commands">Method Names in Commands</a>,
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Up: <a rel="up" accesskey="u" href="Objective_002dC.html#Objective_002dC">Objective-C</a>
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</div>
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<h5 class="subsubsection">15.4.4.2 The Print Command With Objective-C</h5>
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<p><a name="index-Objective_002dC_002c-print-objects-1025"></a><a name="index-print_002dobject-1026"></a><a name="index-po-_0040r_007b_0028_0040code_007bprint_002dobject_007d_0029_007d-1027"></a>
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The print command has also been extended to accept methods. For example:
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<pre class="smallexample"> print -[<var>object</var> hash]
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</pre>
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<p><a name="index-print-an-Objective_002dC-object-description-1028"></a><a name="index-g_t_0040code_007b_005fNSPrintForDebugger_007d_002c-and-printing-Objective_002dC-objects-1029"></a>will tell <span class="sc">gdb</span> to send the <code>hash</code> message to <var>object</var>
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and print the result. Also, an additional command has been added,
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<code>print-object</code> or <code>po</code> for short, which is meant to print
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the description of an object. However, this command may only work
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with certain Objective-C libraries that have a particular hook
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function, <code>_NSPrintForDebugger</code>, defined.
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</body></html>
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