xifstream - Create an executable input-stream.
(filename) xifstream -> file true
-> false
xifstream first tries to open a file
by the given name. If this was successful, it creates
an executable stream-handle.
If an executable stream is executed (e.g. with exec),
the interpreter parses this file according to SLI syntax
and evaluates all contained objects.
/var/www/debian/nest/nest-simulator-2.20.0/sli/sli_io.cc