pub(crate) fn db_contains_key(
ctx: FunctionEnvMut<'_, Env>,
ptr: WasmPtr<u8>,
ptr_len: u32,
) -> i64
Expand description
Check if a database contains a given key.
Returns 1
if the key is found.
Returns 0
if the key is not found and there are no errors.
Otherwise, returns an error code.
Permissions: deploy, metadata, exec