4.6. Functions

These are functions that work alone and can be used without needing previous calls to other functions. This is a simple example of the Posix VAPI file for the sync system call:

[CCode (cname = "sync")]
void sync ();

The ccode attribute, cname, specifies the C name to use. This avoids valac appending the current namespace to the function name, ensuring that a call to Posix.sync () in vala will map to a call to sync () in C, and not to posix_sync ().