pub fn exists_storage(key: &[u8]) -> bool {
	unsafe {
		ext_exists_storage.get()(
			key.as_ptr(), key.len() as u32
		) != 0
	}
}
/// Determine whether a particular key exists in storage.
Determine whether a particular key exists in storage.
Determine whether a particular key exists in storage .
pub fn exists_storage(key: &[u8]) -> bool {
	unsafe {
		ext_exists_storage.get()(
			key.as_ptr(), key.len() as u32
		) != 0
	}
}
pub fn exists_storage ( key : & [ u8 ] ) -> bool { unsafe { ext_exists_storage . get ( ) ( key . as_ptr ( ) , key . len ( ) as u32 ) != 0 } }
Determine whether a particular key exists in storage.
Determine whether a particular key exists in storage .
key
&[u8]
key
&[u8]