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<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
~/tcltk$ <b>tclsh</b>
% <b>set People(friend) Tom</b>
Tom
% <b>set People(spouse) Marcia</b>
Marcia
% <b>set People(boss) Jack</b>
Jack
% <b>array names People</b>
friend boss spouse
% <b>set Person $People(friend)</b>
Tom
% <b>array get People</b>
friend Tom boss Jack spouse Marcia
% <b>set People(friend) \
[concat $People(friend) Bob]</b>
Tom Bob
% <b>set Person $People(friend)</b>
Tom Bob
%
</code>
</pre>
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<td width="90%"><font size="4" face="Verdana, Arial, Helvetica"><b>Tcl arrays</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr> 第 8 页（共15 页）</nobr></font></td>
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<font size="2" face="Verdana, Arial, Helvetica">
<p>The shortcut to understanding Tcl arrays is to regard them
in the same light as you would a Perl hash. The array is
not a numerically indexed linear data structure, unless
you choose to impose that interpretation upon your data.
The index (or key) may be any string, although strings
with spaces need either to be quoted, or a variable
reference.</p>
<p>Just as with normal variables, arrays are initialized with
the <i>set</i> command, as shown at left. The index is given
inside parentheses. Please note that the parentheses do not
provide grouping like curly brackets or double quotes. Once
initialized as an array, a variable may not be accessed as a
singular variable. As shown at the bottom of the listing to
the left, array elements may also be lists.</p>
<br>
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