[D3] Start Visualizing Data Driven Documents with D3 v4

It’s time to live up to D3’s true name and potential by integrating some real data into your visualization. This lesson introduces the fun
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[RxJS] Avoid mulit post requests by using shareReplay()

import 'rxjs/add/operator/shareReplay'; signUp(email: string, password: string) { return this.http.post<User>('/api/signup', { email,
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[Angular] The Select DOM Event and Enabling Text Copy

When we "Tab" into a input field, we want to select all the content, if we start typing, it should remove the existing content and add new content.We
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spring cloud报错解决:java.lang.ClassNotFoundException: com.netflix.servo.monitor.Monitors

见鬼的事发生了。在家里电脑上拿样例代码,运行时OK的。但一到公司电脑,用同样的代码,就会报下面的错误=====================Caused by: java.lang.ClassNotFoundException: com.netflix.servo.monitor.Monitors
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BZOJ2255 : [Swerc2010]Palindromic DNA

考虑2-SAT建图,设$a[i][0..1]$表示$i$变不变,$b[i][0..1]$表示$i$是下降还是上升。首先相邻的不能同时动,说明$a[i]$和$a[i+1]$里最多选一个。对于$x$和$y$要相等,假设$s[x]\geq s[y]$。$1.$若$s[x]-s[y]=3$,则视为$1$,并
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create-react-app之Invalid Host Header

【create-react-app之Invalid Host Header】1、When you enable the `proxy` option, you opt into a more strict set of host checks. This is necessary because l
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mark Pay http://git.oschina.net/littleCrazy/dianshangpingtai-zhifu/blob/master/OrderPayController

@Controller @RequestMapping("/api/pay/") public class OrderPayController extends BaseController{ @Autowired private OrderManager orderManager; @Aut
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【转】java.lang.ClassNotFoundException: org.springframework.context.event.GenericApplicationListener

http://www.cnblogs.com/softidea/p/6064091.html Caused by: java.lang.NoClassDefFoundError: org/springframework/context/event/GenericApplicationLis
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BZOJ2491 : Quelling Blade

首先将合成树展开,得到一棵不超过$m(m\leq 10^6)$的有根树。问题等价于,不休息地访问所有点,访问每个点需要时间$t_i$,价值为$v_i$。设$vis_i$为访问$i$点的时间(不含$t_i$),最大化$\sum t_i\times v_i$。根据排序不等式可得,需要按照$\frac{v
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wpa_supplicant介绍【转】

本文转载自:https://zhuanlan.zhihu.com/p/24246712一.什么是wpa_spplicantwpa_supplicant本是开源项目源码,被谷歌修改后加入Android移动平台,它主要是用来支持WEP,WPA/WPA2和WAPI无线协议和加密认证的,而实际上的工作内容是
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