(一)
当多个进程企图对共享数据进行某种处理,而最后的结果又取决于进程运行的顺序时,就认为它们发生了竞争关系。避免竞争的条件,给出apue上的一个代码吧:
#include "apue.h"
static void charatatime(char *);
int
main(void)
{
pid_t pid;
TELL_WAIT(); /*set things up for TEL...
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系统相关 时间:
2014-05-15 12:20:22
阅读次数:
408
几个单词
Hierarchy
['ha??rɑ?k?]
n. 层级
思考:每个视图有一个父视图,有0个或者多个子视图
Manipulation
[m?,n?pj?'le??(?)n] n.
操纵;操作
Descendant
[d?'send(?)nt]
n. 后裔;子孙
UIWindow
Feature:
1、UIWindow set up...
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其他好文 时间:
2014-05-15 12:13:20
阅读次数:
430
导航栏自带的按钮,时常不能满足要求,所以深深需要进行各种定制.写一个UINavigationItem的category//
UINavigationItem+CB_ChangeButton.h?@interface UINavigationItem
(CB_ChangeButton)- (void)...
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其他好文 时间:
2014-05-15 11:28:21
阅读次数:
201
Two SumGiven an array of integers, find two
numbers such that they add up to a specific target number.The function twoSum
should return indices of the...
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其他好文 时间:
2014-05-15 10:48:59
阅读次数:
322
The modernization of world had led to coming of
many businesses online. Businesses have realized the importance of coming up
online. That is the main ...
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其他好文 时间:
2014-05-15 10:14:55
阅读次数:
364
当你想要通过webdriver导航到一个链接,正常的方式点是通过调用get方法:driver.get("http://www.google.com")Interacting
with the page在页面中的HTML元素。如果我们需要找到定位一个。那么webdriver提供了许多方法来寻找元素.....
分类:
编程语言 时间:
2014-05-15 09:50:11
阅读次数:
393
//创建按钮初始化UIButton*leftButton=[[UIButtonalloc]initWithFrame:CGRectMake(0,0,60,24)];//添加返回方法[leftButtonaddTarget:selfaction:@selector(backMainViewController)forControlEvents:UIControlEventTouchUpInside];//设置字体颜色,状态[leftButtonsetTitleColor..
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其他好文 时间:
2014-05-15 00:36:08
阅读次数:
320
Linked List Cycle
Total Accepted: 17148 Total
Submissions: 49300My Submissions
Given a linked list, determine if it has a cycle in it.
Follow up:
Can you solve it without using extra sp...
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其他好文 时间:
2014-05-15 00:13:50
阅读次数:
279
[ 问题: ]
Given an array of integers, find two numbers such that they add up to a specific target number.
The function twoSum should return indices of the two numbers such that they add up to the ta...
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其他好文 时间:
2014-05-15 00:04:39
阅读次数:
377
Linked List CycleGiven a linked list, determine
if it has a cycle in it.Follow up:Can you solve it without using extra
space?做完Linked List Cycle II在做这...
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其他好文 时间:
2014-05-14 23:30:00
阅读次数:
399