[%CFEngine_function_prototype(var)%]
Description: Returns whether a variable named var
is defined.
The variable need only exist. This says nothing about its value. Use
regcmp
to check variable values. Variable references like foo[bar]
are also checked, so this is a way to check if a classic CFEngine
array or a data container has a specific key or element.
[%CFEngine_function_attributes(var)%]
Example:
[%CFEngine_include_snippet(isvariable.cf, #+begin_src cfengine3, .*end_src)%]
Output:
[%CFEngine_include_snippet(isvariable.cf, #+begin_src\s+example_output\s, .end_src)%]