<a href="#Slice_types">slice</a>, or <a href="#Type_parameter_declarations">type parameter</a> type,
and deletes or zeroes out all elements
[<a href="#Go_1.21">Go 1.21</a>].
</p>

<pre class="grammar">
Call        Argument type     Result

clear(m)    map[K]T           deletes all entries, resulting in an
                              empty map (len(m) == 0)

    silently leak connections when an interceptor retries without closing the response body. With
    3.14 we detect this problem but the exception was not helpful.

## Version 3.14.0

_2019-03-14_

 *  **This release deletes the long-deprecated `OkUrlFactory` and `OkApacheClient` APIs.** These
    facades hide OkHttp's implementation behind another client's API. If you still need this please

&(s=r,t=a):(null==s||r<s||d)&&(s=r,t=a,d&&(i=!0));l(e,t||a)}(e):n?va(e):r(t=(a=e)._i)?a._d=new Date(M.now()):d(t)?a._d=new Date(t.valueOf()):"string"==typeof t?function(e){var a=ya.exec(e._i);null===a?(ka(e),!1===e._isValid&&(delete e._isValid,Ta(e),!1===e._isValid&&(delete e._isValid,e._strict?e._isValid=!1:M.createFromInputFallback(e)))):e._d=new Date(+a[1])}(a):i(t)?(a._a=u(t.slice(0),function(e){return parseInt(e,10)}),wa(a)):_(t)?function(e){var a,t;e._d||(t=void 0===(a=J(e._i)).day?a.date:...

		}
	}

	// Remove functions only used as expressions, so their respective
	// bridge functions are not generated.
	for name, used := range functions {
		if !used {
			delete(f.Name, name)
		}
	}
}

// rewriteName returns the expression used to rewrite a reference.
// If addPosition is true, add position info in the ident name.

## CRUD工具

现在让我们看看文件`sql_app/crud.py`。

在这个文件中，我们将编写可重用的函数用来与数据库中的数据进行交互。

**CRUD**分别为：增加（**C**reate）、查询（**R**ead）、更改（**U**pdate）、删除（**D**elete），即增删改查。

...虽然在这个例子中我们只是新增和查询。

### 读取数据

从 `sqlalchemy.orm`中导入`Session`，这将允许您声明`db`参数的类型，并在您的函数中进行更好的类型检查和完成。

导入之前的`models`（SQLAlchemy 模型）和`schemas`（Pydantic*模型*/模式）。

创建一些工具函数来完成：

.hide())},e._isWithActiveTrigger=function(){for(var t in this._activeTrigger)if(this._activeTrigger[t])return!0;return!1},e._getConfig=function(t){var e=o.default(this.element).data();return Object.keys(e).forEach((function(t){-1!==Pt.indexOf(t)&&delete e[t]})),"number"==typeof(t=r({},this.constructor.Default,e,"object"==typeof t&&t?t:{})).delay&&(t.delay={show:t.delay,hide:t.delay}),"number"==typeof t.title&&(t.title=t.title.toString()),"number"==typeof t.content&&(t.content=t.content.toString(...

  for (int64_t i = 0; i < num_dims; ++i) {
    num_elements *= dims[i];
  }
  TF_Tensor* t = TF_AllocateTensor(TF_STRING, dims, num_dims,
                                   sizeof(TF_TString) * num_elements);
  delete[] dims;

  TF_TString* data = static_cast<TF_TString*>(TF_TensorData(t));
  for (int i = 0; i < batch_size; ++i) {
    TF_TString_Init(&data[i]);

* ✏️ Fix typo in `docs/ru/docs/index.md`. PR [#10672](https://github.com/tiangolo/fastapi/pull/10672) by [@Delitel-WEB](https://github.com/Delitel-WEB).
* ✏️ Fix typos in `docs/zh/docs/tutorial/extra-data-types.md`. PR [#10727](https://github.com/tiangolo/fastapi/pull/10727) by [@HiemalBeryl](https://github.com/HiemalBeryl).

            <p><strong>Warning:</strong> This is an internal utility property that is only public for technical reasons,
            it is not part of the public API. In particular, this property can be changed or deleted without prior
            notice.</p>
            ]]>
          </description>
        </field>
        <field>
          <name>goals</name>
          <version>4.0.0+</version>

}\n    }\n\n    return false\n  }\n\n  _getConfig(config) {\n    const dataAttributes = $(this.element).data()\n\n    Object.keys(dataAttributes)\n      .forEach(dataAttr => {\n        if (DISALLOWED_ATTRIBUTES.indexOf(dataAttr) !== -1) {\n          delete dataAttributes[dataAttr]\n        }\n      })\n\n    config = {\n      ...this.constructor.Default,\n      ...dataAttributes,\n      ...(typeof config === 'object' && config ? config : {})\n    }\n\n    if (typeof config.delay === 'number') {\n  ...