csh
9010829c6d
Flatten builtin pages, add third-party and platform scopes, and import financial and data warehouse references. Keep the existing generated index without rebuilding after signature normalization.
88 lines
1.8 KiB
Markdown
88 lines
1.8 KiB
Markdown
# Builtin - 对象
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## `createObject(class_name, ...)`
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声明：function
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创建一个已在 TSL 语言中注册的对象，类名或类类型无效时调用出错
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<!-- tags: 对象 创建 实例 类 -->
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| 参数 | 类型 | 说明 |
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| ------------ | ----------------- | -------------------------------------------------------------- |
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| `class_name` | string\|classtype | 已注册的对象类名，或通过 `class()`、`findClass()` 获得的类类型 |
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| `...` | any | 可选。按顺序传给类构造函数的参数 |
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返回：tslobject
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### 示例
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范例01：向构造函数传递参数
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```tsl
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obj := createObject('CreationExample', 42);
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echo obj.value, "\n";
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type CreationExample = class
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public
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value;
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function create(initial_value);
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begin
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value := initial_value;
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end;
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end;
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// 输出：42
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```
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## `findClass(class_name)`
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声明：function
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按名称查找类，找不到时返回 `0`
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| 参数 | 类型 | 说明 |
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| ------------ | ------ | ------ |
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| `class_name` | string | 类名称 |
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返回：tclass\|integer
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### 示例
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范例01：查找脚本中声明的类
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```tsl
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class_value := findClass("DemoClass");
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echo class_value <> 0;
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// 输出：1
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type DemoClass = class
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end;
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```
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## `findClass(class_name, obj)`
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声明：function
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将对象转换为指定类，类不匹配时返回 `0`
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| 参数 | 类型 | 说明 |
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| ------------ | ------ | ------------ |
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| `class_name` | string | 类名称 |
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| `obj` | object | 要转换的对象 |
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返回：object\|integer
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### 示例
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范例01：转换为指定类
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```tsl
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obj := new DemoClass();
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typed_obj := findClass("DemoClass", obj);
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echo typed_obj <> 0;
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// 输出：1
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type DemoClass = class
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end;
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```
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