explanations

inkdevhub · Nov 22, 2023 · e5a2467 · e5a2467
1 parent 38f962e
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diff --git a/examples/runtime-interaction/README.md b/examples/runtime-interaction/README.md
@@ -20,3 +20,5 @@ You can always switch from `Session` to `Sandbox` with:
     ...
     let sandbox = session.sandbox(); // `sandbox` has type `&mut Sandbox<Runtime>`
 ```
+
+A rule of thumb is: if you are working with contracts, use `Session`, otherwise use `Sandbox`.
diff --git a/examples/runtime-interaction/lib.rs b/examples/runtime-interaction/lib.rs
@@ -63,6 +63,9 @@ mod tests {
             .expect("Failed to remove a contract");
     }
 
+    /// This is just a dummy contract code, that does nothing. It is written in WAT, a text format
+    /// for WebAssembly. We need to have some valid contract bytes in order for `upload_contract`
+    /// to succeed.
     const CONTRACT: &str = r#"
     (module
 	(import "seal0" "seal_deposit_event" (func $seal_deposit_event (param i32 i32 i32 i32)))
-Original file line number
+Diff line change
@@ Expand Up / @@ -20,3 +20,5 @@ You can always switch from `Session` to `Sandbox` with: @@
         ...
         let sandbox = session.sandbox(); // `sandbox` has type `&mut Sandbox<Runtime>`
     ```
+    A rule of thumb is: if you are working with contracts, use `Session`, otherwise use `Sandbox`.