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Flask信号量
Flask框架中的信号基于blinker,其主要就是让开发者可是在flask请求过程中定制一些用户行为。 1. flask内置信号 源码示例 class Flask(_PackageBoundObject): def full_dispatch_request(self): self.try_tri ...
分类:其他好文   时间:2019-06-10 13:40:10    阅读次数:96
并发编程专题(三)-线程的状态
线程从创建、运行到结束总是处于下面五个状态之一:新建状态、就绪状态、运行状态、阻塞状态及死亡状态。
分类:编程语言   时间:2019-06-07 09:13:39    阅读次数:102
SDNU 1108.Happy luguans(水题)
Description Description A sequence of n > 0 integers is called a happy luguan if the absolute values of the difference between successive elements tak ...
分类:移动开发   时间:2019-06-03 21:29:01    阅读次数:185
Can't create handler inside thread that has not called Looper.prepare()
问题: Can't create handler inside thread that has not called Looper.prepare() 1,在报错的方法前加Looper.prepare(); 方法末尾加Looper.loop(); 2,问题原因: 在android的多线程开发中,比如 ...
分类:其他好文   时间:2019-05-29 16:33:35    阅读次数:138
HLS:Latency And Initialization Interval
“The Initiation Interval, often called the Interval or the II, is the number of clock cycles between when the task can start to accept new input data” ...
分类:其他好文   时间:2019-05-24 10:49:56    阅读次数:174
NQueens
/* A utility function to check if a queen can be placed on board[row][col]. Note that this function is called when "col" queens are already placeed in ...
分类:其他好文   时间:2019-05-18 14:12:57    阅读次数:144
Widget Size and Position !!!!!!!!!!!!!!!!!!
https://medium.com/@diegoveloper/flutter-widget-size-and-position-b0a9ffed9407 I have read many questions about how we can obtain the dimensions or po ...
分类:其他好文   时间:2019-05-15 16:49:09    阅读次数:266
The Number of Inversions(逆序数)
For a given sequence A={a0,a1,...an?1}A={a0,a1,...an?1}, the number of pairs (i,j)(i,j) where ai>ajai>aj and i<ji<j, is called the number of inversion ...
分类:其他好文   时间:2019-05-13 23:15:17    阅读次数:131
how pwm update
1. in which ways can SetPwm be called? 1.1 ProcessSpindleJobQueue, TLG_MOT_CMD_OPEN or ... received 1.2 counter == 4 1.3 when counter==1, calcutate Cu ...
分类:其他好文   时间:2019-05-13 14:30:51    阅读次数:108
Qt使用双缓冲绘图时报错:pure virtual method called
这个问题折磨了我将近四个小时。 起始原因是想写一个双缓冲绘图的画板,大概看了一下网上的教程,理解双缓冲绘图的思想后,没有完全参照网上的步骤,想着用自己的思路实现一下。(其实和网上的教程也没有太大差别) 然后就出现问题了,出现问题的关键的代码如下: 在调试时,跳转到了这个地方: 哎,感觉自己傻逼,ID ...
分类:其他好文   时间:2019-05-06 23:36:19    阅读次数:212
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