Init Function
Init is a special function which gets called when a module is published. It is guaranteed that it will never be called again. It can take the &mut TxContext as the last argument and a One-Time-Witness (optional) as the first argument.
fun init(ctx: &mut TxContext) { /* ... */ }
For example:
module examples::init_function {
/// The one of a kind - created in the module initializer.
public struct CreatorCap has key {
id: UID
}
/// This function is only called once on module publish.
/// Use it to make sure something has happened only once, like
/// here - only module author will own a version of a
/// `CreatorCap` struct.
fun init(ctx: &mut TxContext) {
transfer::transfer(CreatorCap {
id: object::new(ctx),
}, ctx.sender())
}
}