原文地址:http://code.joejag.com/2016/anti-if-the-missing-patterns.html Around 10 years ago I encountered the anti-if campaign and found it to be an absurd concept. How on earth would you make a useful program without using an if statement? Preposterous.…
By Bohdan Orlov on 21 Mar 2016 - 0 Comments iOS FYI: Slides from my presentation at NSLondon are available here. Feeling weird while doing MVC in iOS? Have doubts about switching to MVVM? Heard about VIPER, but not sure if it worth it? Keep reading t…
Chapter 5. Join Patterns 把数据保存成一个巨大的数据集不是很常见.例如,用户信息数据频繁更新,所以要保存到关系数据库中.于此同时,web日志以恒定的数据流量增加,直接写到HDFS.这些日志的日常分析过的数据保存在hdfs的某个地方,财务数据存储在加密的仓库中.还有很多例子... (原文are stored someone where in HDFS 貌似应改为 are stored somewhere in HDFS) 数据遍布于各处,本身也很有价值.当我们合起来分析这些…
原文:https://iwringer.wordpress.com/2015/08/03/patterns-for-streaming-realtime-analytics/ Introduction More and more use cases, we want to react to data faster, rather than storing them in a disk and periodically processing and acting on the data. This…
AMD - Learning JavaScript Design Patterns [Book] - O'Reilly The overall goal for the Asynchronous Module Definition (AMD) format is to provide a solution for modular JavaScript that developers can use today. It was born out of Dojo’s real world exper…
最近打包上传是遇到一个问题: 描述: Missing Push Notification Entitlement - Your app includes an API for Apple's Push Notification service, but the aps-environment entitlement is missing from the app's signature. To resolve this, make sure your App ID is enabled for…
原文链接:http://www.c-sharpcorner.com/UploadFile/19b1bd/design-patterns-simplified-part3-factory/ Design Patterns Simplified - Part 3 (Simple Factory)[设计模式简述--第三部分(简单工厂)] This article explains why and how to use the Simple Factory Design Pattern in softw…
Given an Android 3x3 key lock screen and two integers m and n, where 1 ≤ m ≤ n ≤ 9, count the total number of unlock patterns of the Android lock screen, which consist of minimum of m keys and maximum n keys. Rules for a valid pattern: Each pattern m…
Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example, Given nums = [0, 1, 3] return 2. Note: Your algorithm should run in linear runtime complexity. Could you implement it u…
Given a sorted integer array where the range of elements are [0, 99] inclusive, return its missing ranges.For example, given [0, 1, 3, 50, 75], return [“2”, “4->49”, “51->74”, “76->99”] 这道题让我们求缺失区间,跟之前那道Summary Ranges很类似,这道题让我们求缺失的空间,给了一个空间的范围[lo…
Given an unsorted integer array, find the first missing positive integer. For example,Given [1,2,0] return 3,and [3,4,-1,1] return 2. Your algorithm should run in O(n) time and uses constant space. 这道题让我们找缺失的首个正数,由于限定了O(n)的时间,所以一般的排序方法都不能用,最开始我没有看到还限…
今天使用SVN提交项目时,出现了这样的提示:"XXX" is scheduled for addition, but is missing.(无关紧要的东西用XXX代替). 看报错说明是这样的:"XXX"已经被列为添加状态,但我们提交时却缺少"XXX"这个. 原因是:之前用SVN提交过的文件/文件夹,被标记为"addition"状态,等待被加入到仓库.虽然你把这个文件删除了,SVN提交的时候还是会尝试提交这个文件,所以就会提示…
#!/usr/bin/python # 8th November, 2009 # update manager failed, giving me the error: # 'files list file for package 'xxx' is missing final newline' for every package. # some Googling revealed that this problem was due to corrupt files(s) in /var/lib/…
#268. Missing Number Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array. For example, Given nums = [0, 1, 3] return 2. Note: Your algorithm should run in linear runtime complexity. Co…
原文链接: http://www.c-sharpcorner.com/UploadFile/19b1bd/design-patterns-simplified-part-2-singleton/ Design Patterns Simplified - Part 2 (Singleton)[设计模式简述--第二部分(单例模式)] I am here to continue the explanation of Design Patterns. Today we will explai…
原文链接:http://www.c-sharpcorner.com/UploadFile/19b1bd/design-patterns-simplified-part1/ Design Patterns Simplified: Part 1[设计模式简述:第一部分] Design patterns are an important consideration when designing or developing any software systems or solutions. There…
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:9001/api/size/get. (Reason: CORS header 'Access-Control-Allow-Origin' missing). 打开API项目录,命名用NuGet安装Microsoft.AspNet.WebApi.Cors: 在WebApiCon…
用UltraISO制作了一个Red Hat Enterprise Linux Server release 5.7系统的U盘启动盘,然后在一台PC上安装,由于安装过程中在干别的事情,有些选项没有细看.安装完成后,启动系统时报错:missing operating system. 插上U盘,在BIOS里面选择从U盘启动就能正常启动系统,搜索了一些资料后,发现在安装LINUX操作系统过程中,由于使用的是U盘方式安装,引导的grub信息被默认安装到了U盘中(很多时候没有注意到这个),拔除U盘后,启动过…
虚拟机(VMware Workstation或Hyper-V)装ghost版系统提示“ntldr is missing Press Ctrl+Alt+del to Resta 此方法对实体机.虚拟机安装Ghost和安装版系统都适用. 我用的是Hyper-V,已设置DVD启动,直接按F2就开始正常安装了,困扰了一天的问题... 用虚拟机安装ghost版系统的时候可能遇到,无法安装情况.如图: 提示“ntldr is missing press ctrl+alt+del to restart” 出…
5.7 An array A contains all the integers from 0 to n, except for one number which is missing. In this problem, we cannot access an entire integer in A with a single operation. The elements of A are represented in binary, and the only operation we can…
问题现象: 使用Cosbench 0.4.2.c4 版本测试Ceph RGW read test失败,遇到异常如下: FreeMarker template error: The following has evaluated to null or missing: ==> info.errorStatistics.stackTraceAndMessage[trace] [in template "mission.ftl" at line 238, column 48] Tip:…
今天在新装的win10 预览版上面,发现git不能启动了,提示信息主要是: The Program can't start because libiconv2.dll is missing 于是我在网上下载了libiconv2.dll文件,然后将这个文件复制到我的git安装目录的git-core文件夹下面,然后一切就ok了.…
Milk Patterns Description Farmer John has noticed that the quality of milk given by his cows varies from day to day. On further investigation, he discovered that although he can't predict the quality of milk from one day to the next, there are some…
