exists

exists is a class, not a keyword. Currently it knows three methods any:, file:, directory:. These methods test for existence of files or directories on the file system.

This is a shortcut for [NSFileManager defaultManager] fileExistsAtPath:isDirectory:], which is hard to use from mulle-scion.

Example

{% if not [exists file:"should-not-be-there.scion"] %}
A cherished file is missing!
{% endif %}

Output:

A cherished file is missing!