explainer § Why: Examples from async and ajv

From #12 (comment). Thanks @theScottyJam.

Author: js-choi

README.md

@@ -323,6 +323,14 @@ return this._target()::isPending();
 var matchesPredicate = tryCatch(item).call(boundTo, e);
 var matchesPredicate = boundTo::(tryCatch(item))(e);
 
+// async-3.0.1/internal/initialParams.js
+var callback = args.pop(); return fn.call(this, args, callback);
+var callback = args.pop(); return this::fn(args, callback);
+
+// ajv-6.10.0/lib/ajv.js
+validate = macro.call(self, schema, parentSchema, it);
+validate = self::macro(schema, parentSchema, it);
+
 // [email protected]/polyfills.js
 return fs$read.call(fs, fd, buffer, offset, length, position, callback)
 return fs::fs$read(fd, buffer, offset, length, position, callback)