Runtime evaluation: Difference between revisions
→Insitux: inclusion
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READ(FIle="my_file.txt", Row=6) string
XEQ( string ) ! executes row 6 of my_file.txt</syntaxhighlight>
=={{Header|Insitux}}==
All valid Insitux code can be evaluated at runtime using <code>eval</code>, including function definitions, with access to the same scope as the <code>eval</code> invocation including the comparatively ephemeral <code>let</code> variables.
<syntaxhighlight lang="insitux">
(let x 123)
[
(eval "(let y 100) (+ x y)")
y
]
</syntaxhighlight>
{{out}}
<pre>
[223 100]
</pre>
It's almost as if the original code was directly present, except error messages which are slightly different.
<b>Normal invocation error output:</b>
<pre>
1:6 (let time 1)
Parse Error: "time" cannot be redefined: already exists.
</pre>
<b><code>eval</code> invocation error output:</b>
<pre>
1:2 (eval "(let time 1)")
Eval Error: error within evaluated code.
Parse Error: 1695133413649 eval line 1 col 6: "time" cannot be redefined: already exists
</pre>
=={{header|J}}==
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