annotation
@export
@export function name(…) -> R
@export makes a function visible outside the module as a plain native symbol, so a host program or another linked object can call it by name. Without it, functions are internal to the compiled unit; with it, the emitted symbol is externally linkable, which is how Ludic hands entry points to a runtime seam or a foreign caller. It is the outbound counterpart to extern function, which pulls a foreign symbol in. Keep exported signatures to POD scalars and pointers, since they cross a native ABI boundary where Ludic's richer types do not apply.
Example
program ScoreModule {
var running_total: int = 0
@export function add_points(amount: int) -> int { # callable from a native host
running_total = running_total + amount
return running_total
}
entry {
print(add_points(10)) # 10
print(add_points(5)) # 15
}
}