Golang管道channel：管道的声明读取写入

曾经终败给现在 2023-10-05 11:03 69阅读 0赞

## 为什么需要channel ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70_pic_center]

## channel的介绍 ##

![在这里插入图片描述][20201003150047215.png_pic_center]

### 管道的本质是队列 ###

*  FIFO 先进先出

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70_pic_center 1]

### 定义/声明管道 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70_pic_center 2]

### channel的初始化和写数据 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70_pic_center 3]

*  管道的本质

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70_pic_center 4]![在这里插入图片描述][20201003151445856.png_pic_center]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70_pic_center 5]

*  向管道写入数据及查看管道的长度和容量

![在这里插入图片描述][20201003151845192.png_pic_center]![在这里插入图片描述][20201003151916219.png_pic_center]

*  往管道加数据，不能超过它的容量，否则报错

![在这里插入图片描述][20201003152209548.png_pic_center]

![在这里插入图片描述][20201003152138792.png_pic_center]

### 从管道中读取数据 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70_pic_center 6]![在这里插入图片描述][20201003152443900.png_pic_center]

*  管道为空的情况下继续取数据会报错

![在这里插入图片描述][20201003152715589.png_pic_center]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70_pic_center 7]

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