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Http://www.infoq.com/cn/articles/crashlytics-crash-statistics-toolsBrief introductionFounded in 2011, Crashlytic is a tool designed to store and analyze crash information for mobile app providers. Crashlytics users include: Payment tool PayPal, reviews app Yelp, photo sharing app Path, Groupon and other mobile apps.In January 2013, Crashlytics was acquired by Twitter as another successful start-up product. After being acquired, we have more reason to

Phpexcel cannot read the Chinese filename (my local environment is UTF-8 encoding)Is win system identification all GBK? (You need to change the Utf-8 string to GBK)$file = "c:\\users\\administrator\\desktop\\ Chinese. xls"; $file Iconv $file ); $objPHPExcel = \phpexcel_iofactory::load ($file); $sheetData $objPHPExcel->getactivesheet ()->toarray (null,true,true, True); Var_dump ($sheetData);I can output it normally ...I see some of the character encodings in turn, such as:$str Iconv $str);This

Chromium recently implemented a new feature of HTML5: The range style, also known as A div! The style rules it sets will make all A div! A span!A div! A span!A div! A span!However, if we set the scoped property for the A div! Then this style rule restriction makes them apply to the parent A div! A span!A div! A span!A div! A span!Of course we can use this tag anywhere. So if you're adventurous, you can add as many range styles as possible within a range style to get the finer possible style cont

charactersCL # #剪切一个字母C3L # #剪切3个字母CW # #剪切一个单词C3W # #剪切3个单词CC # #剪切一行C3C # #剪切3行ESC---> P # #剪切过后会进入到插入模式, be sure to exit insert mode when performing a paste action4.vim Visualization ModePress "CTRL + V" in command mode to enter the visual modeIn visual mode, you can select characters in the areaBulk add characters in visual mode*>> Ctrl + V Select the column to which you want to add characters*>> Press "I" into insert mode, write the characters to be added*>> Press ESC5. Bulk modification o

of charactersDL # #删除一个字母 # #D3L # #删除3个字母 # #DW # #删除一个单词 # #d3w # #删除3个单词 # #DD # #删除一行 # #D3D # #删除3行 # #3. Cutting of charactersCL # #剪切一个字母 # #C3L # #剪切3个字母 # #CW # #剪切一个单词 # #c3w # #剪切3个单词 # #C3C # #剪切3行 # #ESC---> P # #剪切过后会进入到插入模式, be sure to exit the insert when you perform the Paste actionMode # #4. Bulk modification of characters:%s/original character/replacement character # #只替换每一行中出现的第一个原有字符 # #:%s/original character/replace character/g # #替换所有 # #:%s/\t//g # #把全文的tab键替去掉, \ t = Ta

character of the cursorA at the end of the line where the cursor is insertedo The next line in the row where the cursor isO the previous line of the row where the cursor is locateds remove the character insertion of the cursorS Delete the line where the cursor is insertedExit mode of 7.vimEnter in command mode: Q # # #退出, can be used when no changes have been made to the file: q! # # #强制退出: Wq # # #退出保存: wq! # # #强制退出保存############## #vimtutor命令 ##########Vimtutor command is a description of th

, thanks to rapid development that makes it possible to cut and optimize carefully. Myth #7: Python cannot do large-scale There are many definitions on a large scale, but YouTube is a large-scale website anyway. More than 1 billion per month of UV, upload video for more than 100 hours, occupy the internet bandwidth of 20%, all of which are based on Python as the core technology. Dropbox,disqus, Eventbrite, Reddit, Twilio, Instagram, Yelp, EVE Onl

Converts a sorted array into a two-prong search tree with the smallest height Describe Notes Data Evaluation Give a sorted array (from small to large) and convert it to a binary tree with the smallest height.PrecautionsThere may exist multiple valid solutions and return any of them.Have you ever encountered this problem in a real interview? YesWhich company is asking you this question?LinkedinAirbnbamazon cryptic Studios Span class= "BTN Btn-xs btn-white Company" >dropb

internationalized characters is a nightmare, people do know! ORM objects can also implement more features, such as class inheritance and composition.There are too many different ORM frameworks, and Java's ORM framework is known for more than 10. Python's big-point open source projects tend to implement an ORM framework themselves, such as Django.I personally recommend SQLAlchemy, the benefits of supporting the database, the development of the year long, the version is relatively stable, there a

Original source: http://blog.csdn.net/hfahe/article/details/7381141Chromium recently implemented a new HTML5 feature: Range style, also known as A div! It sets the style rules to make all A div! A span!A div! A span!A div! A span! However, if we set the scoped property for the A div! This style rule restriction allows them to be applied to the parent A div! A span!A div! A span!A div! A span! Of course we can use this tag anywhere. So if you like to take risks, you can add

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the author Dan Bode is an integrated expert in puppet labs. He worked for nearly 10 years as a consultant and software developer in the tech industry. Over the past four years he has spent a lot of time building automated infrastructure solutions and teaching people how to use puppet. It restricts work at the puppet Lab's business development department, where he studies technology and thinks about how to deliver value through integrated puppet. The Puppet Lab's IT automation software enables

From: 74964366/The relationship database and the Hadoop ecosystem are becoming more dense and more demanding. This article is to investigate the real-time crawl MySQL update data to HDFs. This article is for research report only. Preliminary research was conducted on Canal (Ali) +kafka Connect+kafka, Maxwell (Zendesk) +kafka and Mysql_streamer (Yelp) +kafka. These tools crawl MySQL by scanning the binlog, simulating MySQL master and slav