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Update about-conditional.md

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xiehan
2022-01-05 21:32:06 +08:00
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docs/en/about-conditional.md
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@@ -62,8 +62,8 @@ WFResourcePool::WFResourcePool(size_t n)
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### Application interfaces
Users use **get()** method of resource pool to wrap a task. **get()** returns a conditional, which is also a task. Conditional will runs the task it wrap when it obtain a resource from the pool. **get()** may accept a second argument **void \*\* resbuf**, which is the buffer that will store the resource abtained. After the **get()** operation, users can use the returned condition to substain the original task. It can be started or put to any series just like an ordinary task.
After the user task is finished, **post()** need to be called to return a resource to the pool. Topically, **post()** is called in user task's callback.
Users use **get()** method of resource pool to wrap a task. **get()** returns a conditional, which is also a task. Conditional will runs the task it wrap when it obtain a resource from the pool. **get()** may accept a second argument **void \*\* resbuf**, which is the buffer that will store the resource abtained. After the **get()** operation, users can use the returned conditional to substain the original task. It can be started or put to any series just like an ordinary task.
After the user task is finished, **post()** need to be called to return a resource to the pool. Typically, **post()** is called in user task's callback.
### Derivation
The using of resource pool is FILO. It means the last released resource will be the next one to be obtained. You may subclass WFResourcePool to implement a FIFO pool.