在编写一个简单的录像应用程序的时候,爆出例如以下异常: E MediaRecorder: setOutputFormat called in an invalid state: 1 E AndroidRuntime: java.lang.IllegalStateException E Android ...
分类:
其他好文 时间:
2018-02-20 11:16:32
阅读次数:
571
Blocks Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 4173 Accepted: 1661 Description Some of you may have played a game called 'Blocks'. ...
分类:
其他好文 时间:
2018-02-14 20:19:54
阅读次数:
193
lambda函数是一种快速定义单行最小函数的方法,是从Lisp借鉴而来的,可以用在任何需要函数的地方。 基础 lambda语句中,冒号前是参数,可以有多个,用逗号分割;冒号右边是返回值。 lambda语句构建的是一个函数对象。 map map(…) 函数官方文档 map函数结果生成一个list,参数 ...
分类:
其他好文 时间:
2018-02-13 15:42:43
阅读次数:
208
4.7.3. Arbitrary Argument Lists Finally, the least frequently used option is to specify that a function can be called with an arbitrary number of argu... ...
分类:
编程语言 时间:
2018-02-07 00:39:41
阅读次数:
190
Given the running logs of n functions that are executed in a nonpreemptive single threaded CPU, find the exclusive time of these functions. Each funct ...
分类:
其他好文 时间:
2018-01-28 11:28:45
阅读次数:
190
Chapter 3. Underlying Technologies We can think of the Internet as a series of backbone networks that are run by international, national, are regional ...
分类:
其他好文 时间:
2018-01-27 13:51:49
阅读次数:
174
一.中间件概念 中间件顾名思义,是介于request与response处理之间的一道处理过程,相对比较轻量级,并且在全局上改变django的输入与输出。因为改变的是全局,所以需要谨慎实用,用不好会影响到性能。我们从浏览器发出一个请求 Request,得到一个响应后的内容 HttpResponse , ...
分类:
其他好文 时间:
2018-01-25 19:54:55
阅读次数:
1515
Eight-puzzle, which is also called "Nine grids", comes from an old game. In this game, you are given a 3 by 3 board and 8 tiles. The tiles are numbere ...
分类:
其他好文 时间:
2018-01-25 17:21:47
阅读次数:
165
The branch of mathematics called number theory is about properties of numbers. One of the areas that has captured the interest of number theoreticians ...
分类:
其他好文 时间:
2018-01-25 13:13:52
阅读次数:
169
A sequence of numbers is called a wiggle sequence if the differences between successive numbers strictly alternate between positive and negative. The ...
分类:
其他好文 时间:
2018-01-24 16:57:18
阅读次数:
150