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| <title>Debugging with GDB: The Print Command with Objective-C</title> |
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| <a name="The-Print-Command-With-Objective_002dC"></a> |
| <h4 class="subsubsection">15.4.4.2 The Print Command With Objective-C</h4> |
| <a name="index-Objective_002dC_002c-print-objects"></a> |
| <a name="index-print_002dobject"></a> |
| <a name="index-po-_0028print_002dobject_0029"></a> |
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| <p>The print command has also been extended to accept methods. For example: |
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| <div class="smallexample"> |
| <pre class="smallexample">print -[<var>object</var> hash] |
| </pre></div> |
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| <a name="index-print-an-Objective_002dC-object-description"></a> |
| <a name="index-_005fNSPrintForDebugger_002c-and-printing-Objective_002dC-objects"></a> |
| <p>will tell <small>GDB</small> to send the <code>hash</code> message to <var>object</var> |
| and print the result. Also, an additional command has been added, |
| <code>print-object</code> or <code>po</code> for short, which is meant to print |
| the description of an object. However, this command may only work |
| with certain Objective-C libraries that have a particular hook |
| function, <code>_NSPrintForDebugger</code>, defined. |
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