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Motivation
Each app written using the SVM SDK should have exactly one
fundable hook
marked as the default one.When an
endpoint/ctor
is annotated with#[fundable]
without specifying an explicitfundable hook
name - the default one will be used.Moreover, when sending coins using a simple-coin transaction to an App account - SVM will execute the logic of the
default fundable hook
(giving a chance for the running app to update its internal storage).Future apps that will be written without using the SVM Rust SDK will have to expose a Wasm function named
svm_fund
.This function's signature is
fn () -> ()
. In other words, the function expects no input and it returns nothing.The SVM SDK will auto-generate the
svm_fund
export behind the scenes.