Runtime evaluation: Difference between revisions
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=={{header|Elena}}==
ELENA
Using ELENA Script engine:
<syntaxhighlight lang="elena">import extensions'scripting;
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public program()
{
}</syntaxhighlight>
{{out}}
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$ wren-cli
\\/"-
\_/ wren v0.
> 20 + 22
42
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Secondly, Wren has the ''Meta.eval'' method which can be used from within a script to execute any valid Wren code (presented to it in string form) at runtime. The string could be constructed within the script, obtained from a file or input by the user. Here's a very simple example:
<syntaxhighlight lang="
var s = "for (i in 0..4) System.print(i)"
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