【机器视觉】 executable

00. 目录

文章目录

00. 目录
01. 概述
02. 签名
03. 描述
04. 注意
05. 参数
06. 结果
07. 附录

01. 概述

executable_expression - 执行独立的算子。

02. 签名

executable_expression( : : Expression : )

03. 描述

HDevelop语言包含一些表达式，不仅返回一个返回值，而且修改它们的输入变量。使用executable_expression，可以以类似于算子的方式执行这些表达式。

目前，这些是向量表达式’.clear（）’，’.insert（）‘和’.remove（）’。有关更多详细信息，请参阅HDevelop用户指南。

尽管Expression在形式上是一个控制参数，但是也可以执行图像表达式。但是，Expression是一个修改表达式。

原文描述：

The HDevelop language contains a few operations that are executed stand-alone, i.e., not as an expression within another operator call. The operator executable_expression allows to enter such stand-alone operations into the operator window of HDevelop. In the full text editor however, those operations are entered verbatim.

Currently, the following modifying vector operations are stand-alone and can only be used in an executable expression:

.clear()

.insert()

.remove()

For further details about these operations please refer to the HDevelop User’s Guide.

Even though Expression formally is presented as a control parameter, nonetheless it is also possible to execute stand-alone operations with iconic vectors.

04. 注意

略

05. 参数

Expression (input_control) 　　number-vector → (real / integer / string)

要执行的表达式

06. 结果

如果指定参数的值正确，则executable_expression返回2（H_MSG_TRUE）。否则会引发异常并返回错误代码。

HDevelop例程
vector_variables.hdev Use vector variables

程序示例

read_image (Image1, 'fin1')
read_image (Image2, 'fin2')
ImageVector.insert(1, Image1).insert(2, Image2)
* process vector
ImageVector.clear()

07. 附录

7.1 机器视觉博客汇总
网址：https://dengjin.blog.csdn.net/article/details/116837497