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import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Outer class that exists solely to let us write {@code Partially.GwtIncompatible} instead of plain
 * {@code GwtIncompatible}. This is more accurate for {@link Futures#catching}, which is available
 * under GWT but with a slightly different signature.
 *

And the data would be saved with that "new" `tax` of `10.5`.

## Partial updates with `PATCH`

You can also use the <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PATCH" class="external-link" target="_blank">HTTP `PATCH`</a> operation to *partially* update data.

This means that you can send only the data that you want to update, leaving the rest intact.

!!! note

<component name="ProjectRunConfigurationManager">
  <configuration default="false" name="Test: Partial Linkage JS / with IC" type="GradleRunConfiguration" factoryName="Gradle" folderName="Tests">
    <ExternalSystemSettings>
      <option name="executionName" />
      <option name="externalProjectPath" value="$PROJECT_DIR$" />
      <option name="externalSystemIdString" value="GRADLE" />
      <option name="scriptParameters" value="--stacktrace" />

<component name="ProjectRunConfigurationManager">
  <configuration default="false" name="Test: Partial Linkage JS / no IC" type="GradleRunConfiguration" factoryName="Gradle" folderName="Tests">
    <ExternalSystemSettings>
      <option name="executionName" />
      <option name="externalProjectPath" value="$PROJECT_DIR$" />
      <option name="externalSystemIdString" value="GRADLE" />
      <option name="scriptParameters" value="--stacktrace" />

<component name="ProjectRunConfigurationManager">
  <configuration default="false" name="Test: Partial Linkage Native / cache dist" type="GradleRunConfiguration" factoryName="Gradle" folderName="Tests">
    <ExternalSystemSettings>
      <option name="executionName" />
      <option name="externalProjectPath" value="$PROJECT_DIR$" />
      <option name="externalSystemIdString" value="GRADLE" />

<component name="ProjectRunConfigurationManager">
  <configuration default="false" name="Test: Partial Linkage Native / cache everywhere" type="GradleRunConfiguration" factoryName="Gradle" folderName="Tests">
    <ExternalSystemSettings>
      <option name="executionName" />
      <option name="externalProjectPath" value="$PROJECT_DIR$" />
      <option name="externalSystemIdString" value="GRADLE" />

  }

  @Test
  @TestMetadata("boolean_partial.kt")
  public void testBoolean_partial() {
    runTest("analysis/analysis-api/testData/components/expressionInfoProvider/whenMissingCases/boolean_partial.kt");
  }

  @Test
  @TestMetadata("enum_else.kt")
  public void testEnum_else() {

* Be very, very careful.
* The cache has a builtin test, enabled with `UNSAFE_PILOT_ENABLE_RUNTIME_ASSERTIONS=true`, that runs in CI. This will panic if any key is written to with a different value.

#### Partial Computations

Along with caching, partial computations are a critical performance optimization to ensure that we do not need to build (or send) every resource to every proxy on every change. This is discussed more in the Config Serving section.

from functools import partial
from typing import Optional

from fastapi import FastAPI
from fastapi.testclient import TestClient


def main(some_arg, q: Optional[str] = None):
    return {"some_arg": some_arg, "q": q}


endpoint = partial(main, "foo")

app = FastAPI()

app.get("/")(endpoint)


client = TestClient(app)


def test_partial():
    response = client.get("/?q=bar")
    data = response.json()