x, err := strconv.Atoi(s)
		if err != nil && parseError == nil {
			parseError = err
		}
		return x
	}
	var major, minor, patch int
	major = atoi(string(matches[1]))
	if len(matches[2]) > 0 {
		minor = atoi(string(matches[2][1:]))
	}
	if len(matches[3]) > 0 {
		patch = atoi(string(matches[3][1:]))
	}
	if parseError != nil {

```

因为上述数据未包含已存储的属性 `"tax": 20.2`，新的输入模型会把 `"tax": 10.5` 作为默认值。

因此，本次操作把 `tax` 的值「更新」为 `10.5`。

## 用 `PATCH` 进行部分更新

<a href="https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Methods/PATCH" class="external-link" target="_blank">HTTP `PATCH`</a> 操作用于更新 *部分* 数据。

即，只发送要更新的数据，其余数据保持不变。

!!! note "笔记"

    `PATCH` 没有 `PUT` 知名，也怎么不常用。

    很多人甚至只用 `PUT` 实现部分更新。

    **FastAPI** 对此没有任何限制，可以**随意**互换使用这两种操作。

        }
        if (path == null) {
            return;
        }
        paths.add(path);
        /*
         * Dispatch the dependency to class-path, module-path, patch-module path, etc.
         * according the dependency properties. We need to process patch-module first,
         * because this type depends on whether a module of the same name has already
         * been added on the module-type.
         */

        }
    };

    /**
     * Returns the unique name of this path type, including the module to patch if any.
     * For example, if this type is {@link JavaPathType#MODULES}, then this method returns {@code "MODULES"}.
     * But if this type was created by {@code JavaPathType.patchModule("foo.bar")}, then this method returns
     * {@code "PATCH_MODULE:foo.bar"}.
     *

FastAPI também segue a convenção de que qualquer alteração de versão "PATCH" é para correção de bugs e alterações não significativas.

!!! tip "Dica"
    O "PATCH" é o último número, por exemplo, em `0.2.3`, a versão PATCH é `3`.

Logo, você deveria conseguir fixar a versão, como:

```txt
fastapi>=0.45.0,<0.46.0
```

    (
      method == "POST" || method == "PATCH" || method == "PUT" ||
        method == "DELETE" || method == "MOVE"
    )

  @JvmStatic // Despite being 'internal', this method is called by popular 3rd party SDKs.
  fun requiresRequestBody(method: String): Boolean =
    (
      method == "POST" || method == "PUT" ||
        method == "PATCH" || method == "PROPPATCH" || // WebDAV
        method == "REPORT"
    )

FastAPI folgt auch der Konvention, dass jede „PATCH“-Versionsänderung für Bugfixes und abwärtskompatible Änderungen gedacht ist.

!!! tip "Tipp"
    Der „PATCH“ ist die letzte Zahl, zum Beispiel ist in `0.2.3` die PATCH-Version `3`.

Sie sollten also in der Lage sein, eine Version wie folgt anzupinnen:

```txt
fastapi>=0.45.0,<0.46.0
```

= vendor/github.com/evanphx/json-patch licensed under: =

Copyright (c) 2014, Evan Phoenix
All rights reserved.

Redistribution and use in source and binary forms, with or without 
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,

                                }
                            },
                        },
                    },
                    "summary": "Patch Item",
                    "operationId": "patch_item_items__item_id__patch",
                    "parameters": [
                        {
                            "required": True,

tar -xvzf "glibc-2.17-c758a686-releng.tar.gz" --strip 1
sed -i '/patch0060/d' glibc.spec
/rpm-patch.sh "glibc.spec"
rm -f "glibc-2.17-317.el7.src.rpm" "glibc-2.17-c758a686.tar.gz" "glibc-2.17-c758a686-releng.tar.gz"
patch -p1 < /gcc9-fixups.patch
patch -p1 < /stringop_trunc.patch
cd ../glibc-build
../glibc-src/configure --prefix=/usr --disable-werror --enable-obsolete-rpc --disable-profile
make -j$(nproc)