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android的apk文件可以被反编译，然后添加或者删除部分code之后，重新打包。详细tutorial参见：1http://bbs.pediy.com/showthread.php?t=1487562http://bbs.pediy.com/showthread.php?t=1473393http://bbs.pediy.com/forumdisplay.php?f=161 阅读全文
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1) declare permission <uses-permission android:name="com.android.browser.permission.READ_HISTORY_BOOKMARKS" /> <uses-permission android:name="com.android.broswer.permission.WRITE_HISTORY_BOOKMARKS" /> <uses-permission android:name="android.permission.READ_CONT 阅读全文
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We all know android has content provider, and we can access these data with content resolver,1) add permission, <uses-permission android:name="android.permission.READ_CONTACTS" />2) getContentResolver ContentResolver cr = getContentResolver(); Cursor cur = cr.query(ContactsContr... 阅读全文
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1 questioniOS app is sandboxed, so if yourapp needs to open some file types in other apps, like dropbox app does, it could list the installed apps which could open specific types of file.How can you do that?,2 answerYou'll want to useUIDocumentInteractionController. See also theDocument Interact 阅读全文
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最近利用空闲时间看iOS开发，看了一本翻译后的中文书。看了些英文资料。还是发现Apple官方的文档好，本来书籍就已经落后于Apple，再翻译过来，可想而知内容肯定out。看英文原版书也不错，还比较紧跟Apple最新的改变。 阅读全文
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The original article is an excellent one to explain How Google chrome use bloom filtes, so I just quote the article below.Nice Bloom filter applicationhttp://blog.alexyakunin.com/2010/03/nice-bloom-filter-application.htmlToday I accidentally found a couple of interesting files in one ofGoogle Chrome 阅读全文
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Bloom Filters by Examplehttp://llimllib.github.com/bloomfilter-tutorial/A Bloom filter is a data structure designed to tell you, rapidly and memory-efficiently, whether an element is present in a set.The price paid for this efficiency is that a Bloom filter is aprobabilistic data structure: it tells 阅读全文
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1 Bloom filterWhen we write crawler, if we have to crawler millions websites, we need to check whether a website is crawled or not,So we need both space and time efficient algorithoms to achieve this goal, Bloom filter is our choice.Bloom filter is aprobabilistic data structure: it tells us that the 阅读全文
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1 Scrapy, Google Scholar and MongoDB contains code about how to use Scrapy in bitbucket.2 Writing a spider in 10 mins using Scrapy This is a simple example. 阅读全文
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Crawling the web for fun and profitView more presentations from Federico Feroldi 阅读全文