Enforced immutability: Difference between revisions
→{{header|Wren}}: Added a supplementary entry
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6
8
</pre>
{{libheader|Wren-trait}}
Since the above entry was written, a ''Const'' class has been added to ''Wren-trait'' which simulates constants to some extent though the values used need themselves to be immutable for this to be water-tight.
=={{header|Wren}}==
<syntaxhighlight lang="ecmascript">import "./trait" for Const
Const["six"] = 6
Const["eight"] = 8
Const["six"] = 7 // ignored, still 6
System.print(Const.entries)</syntaxhighlight>
{{out}}
<pre>
[eight:8, six:6]
</pre>
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