Modulinos: Difference between revisions

=={{header|Nim}}==

Nim provides the predicate <code>isMainModule</code> to use with conditional compilation. Here is an example:

<syntaxhighlight lang="Nim">proc p*() =

## Some exported procedure.

echo "Executing procedure"

# Some code to execute to initialize the module.

echo "Initializing the module"

when isMainModule:

# Some code to execute if the module is run directly, for instance code to test the module.

echo "Running tests"

</syntaxhighlight>

{{out}}

When run directly, the result of execution is:

<pre>Initializing the module

Running tests

</pre>

If we call “p” from another module, we get:

<pre>Initializing the module

Executing procedure

</pre>