print(a)
}
</pre>

<p>
the assignment to <code>a</code> is not followed by
any synchronization event, so it is not guaranteed to be
observed by any other goroutine.
In fact, an aggressive compiler might delete the entire <code>go</code> statement.
</p>

<p>
If the effects of a goroutine must be observed by another goroutine,
use a synchronization mechanism such as a lock or channel

						if err != nil {
							fmt.Println("combine WriteFile:", err)
						}
						fmt.Println("Remapped", partName, "to", fn)
					}
					delete(partDataToVerID, partName)
					err := os.WriteFile(fn, data, os.ModePerm)
					if err != nil {
						fmt.Println("WriteFile:", err)
					}
				}
			}
			if len(partDataToVerID) > 0 {

,d){if(a.formUtils.isLoadingModules){var e=this;return setTimeout(function(){e.isValid(b,c,d)},200),null}c=a.extend({},a.formUtils.defaultConfig(),c||{}),b=a.extend({},a.formUtils.LANG,b||{}),d=d!==!1,a.formUtils.errorDisplayPreventedWhenHalted&&(delete a.formUtils.errorDisplayPreventedWhenHalted,d=!1);var f=function(b,e){a.inArray(b,h)<0&&h.push(b),i.push(e),e.valAttr("current-error",b),d&&a.formUtils.dialogs.applyInputErrorStyling(e,c)},g=[],h=[],i=[],j=this,k=function(b,d){return"submit"===d|...

				"multipart/digest",
				"multipart/encrypted",
				"multipart/example",
				"multipart/form-data",
				"multipart/header-set",
				"multipart/mixed",
				"multipart/parallel",
				"multipart/related",
				"multipart/report",
				"multipart/signed",
				"multipart/voice-message",
				"text/x-actionscript",
				"text/x-ada",
				"text/x-applescript",
				"text/asp",
				"text/aspdotnet",

        return next;
      }

      @Override
      public String toString() {
        return "Iterators.consumingIterator(...)";
      }
    };
  }

  /**
   * Deletes and returns the next value from the iterator, or returns {@code null} if there is no
   * such value.
   */
  @CheckForNull
  static <T extends @Nullable Object> T pollNext(Iterator<T> iterator) {

* ♻ Change a `dict()` for `{}` in `fastapi/utils.py`. PR [#3138](https://github.com/tiangolo/fastapi/pull/3138) by [@ShahriyarR](https://github.com/ShahriyarR).
* ♻ Move internal variable for errors in `jsonable_encoder` to put related code closer. PR [#4560](https://github.com/tiangolo/fastapi/pull/4560) by [@GuilleQP](https://github.com/GuilleQP).

(dropdownChild) {\n        $(dropdownChild).removeClass(CLASS_NAME_ACTIVE)\n      }\n\n      if (active.getAttribute('role') === 'tab') {\n        active.setAttribute('aria-selected', false)\n      }\n    }\n\n    $(element).addClass(CLASS_NAME_ACTIVE)\n    if (element.getAttribute('role') === 'tab') {\n      element.setAttribute('aria-selected', true)\n    }\n\n    Util.reflow(element)\n\n    if (element.classList.contains(CLASS_NAME_FADE)) {\n      element.classList.add(CLASS_NAME_SHOW)\n    }\n\n    let...

   * once after loading completes). Much internal cache management is performed at the segment
   * granularity. For example, access queues and write queues are kept per segment when they are
   * required by the selected eviction algorithm. As such, when writing unit tests it is not
   * uncommon to specify {@code concurrencyLevel(1)} in order to achieve more deterministic eviction
   * behavior.
   *

## 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：

(dropdownChild) {\n        $(dropdownChild).removeClass(ClassName.ACTIVE)\n      }\n\n      if (active.getAttribute('role') === 'tab') {\n        active.setAttribute('aria-selected', false)\n      }\n    }\n\n    $(element).addClass(ClassName.ACTIVE)\n    if (element.getAttribute('role') === 'tab') {\n      element.setAttribute('aria-selected', true)\n    }\n\n    Util.reflow(element)\n\n    if (element.classList.contains(ClassName.FADE)) {\n      element.classList.add(ClassName.SHOW)\n    }\n\n    if (element.parentNode...