fix docs + improve doc exammple runner

Author: rmorshea

Diff for: docs/source/examples/simple_dashboard.py

@@ -43,7 +43,7 @@ def RandomWalkGraph(mu, sigma):
     interval = use_interval(0.5)
     data, set_data = idom.hooks.use_state([{"x": 0, "y": 0}] * 50)
 
-    @idom.hooks.use_async
+    @idom.hooks.use_effect
     async def animate():
         await interval
         last_data_point = data[-1]
@@ -75,8 +75,8 @@ def update_value(value):
     )
 
 
-def use_interval(rate: float) -> Awaitable[None]:
-    usage_time = use_ref(time.time())
+def use_interval(rate):
+    usage_time = idom.hooks.use_ref(time.time())
 
     async def interval() -> None:
         await asyncio.sleep(rate - (time.time() - usage_time.current))

Diff for: docs/source/examples/snake_game.py

@@ -76,7 +76,7 @@ async def on_direction_change(event):
 
     interval = use_interval(0.5)
 
-    @idom.hooks.use_async
+    @idom.hooks.use_effect
     async def animate():
         if new_game_state is not None:
             await asyncio.sleep(1)
@@ -114,8 +114,8 @@ def set_food():
     return food, set_food
 
 
-def use_interval(rate: float) -> Awaitable[None]:
-    usage_time = use_ref(time.time())
+def use_interval(rate):
+    usage_time = idom.hooks.use_ref(time.time())
 
     async def interval() -> None:
         await asyncio.sleep(rate - (time.time() - usage_time.current))

Diff for: scripts/run_doc_example.py

@@ -0,0 +1,52 @@
+import sys
+from pathlib import Path
+from traceback import print_exc
+
+import idom
+from idom.server.sanic import PerClientStateServer
+
+here = Path(__file__).parent
+examples_dir = here.parent / "docs" / "source" / "examples"
+sys.path.insert(0, str(examples_dir))
+
+for file in examples_dir.iterdir():
+    if not file.is_file() or not file.suffix == ".py" or file.stem.startswith("_"):
+        continue
+
+
+def main():
+    views = []
+
+    for example_file in examples_dir.glob("*.py"):
+        if not example_file.stem.startswith("_"):
+            with example_file.open() as f_obj:
+                try:
+                    exec(
+                        f_obj.read(),
+                        {
+                            "display": lambda f, *a, **kw: views.append(
+                                (example_file.stem, f, a, kw)
+                            ),
+                            "__file__": str(file),
+                            "__name__": f"widgets.{file.stem}",
+                        },
+                    )
+                except Exception:
+                    print(f"Failed to load {example_file}")
+                    print_exc()
+                    print()
+
+    @idom.element
+    def AllExamples():
+        examples = []
+        for title, f, a, kw in views:
+            examples.append(idom.html.h1(title))
+            examples.append(f(*a, **kw))
+            examples.append(idom.html.hr({"style": {"margin-top": "20px"}}))
+        return idom.html.div({"style": {"margin": "20px"}}, examples)
+
+    PerClientStateServer(AllExamples).run("127.0.0.1", 5000)
+
+
+if __name__ == "__main__":
+    main()