Programming Language & Operating System You Should Know to Be A Developer

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typedef struct OBJC_OBJECT { Class Isa; } *id; Class is a pointer to a obj...</p> </div> <ul class="list"> <li> <a href="//topic.alibabacloud.com/a/ios-uitabbaritem-change-the-height-and-width-of-the-image_1_19_20205602.html" target="_blank" title=""> [iOS] Uitabbaritem Change the height and width of the image <span class="time">07-24</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/a-solution-to-html5-multiple-digits-in-ios-into-phone-numbers_1_19_20261006.html" target="_blank" title=""> A solution to HTML5 multiple digits in iOS into phone numbers <span class="time">07-29</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/bi-directional-adjustable-slider-slider-__ios-for-ios-development_1_19_20266365.html" target="_blank" title=""> Bi-directional Adjustable slider slider __ios for IOS develop... <span class="time">07-30</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/change-ios-input-style_1_19_20275243.html" target="_blank" title=""> Change iOS input style <span class="time">07-31</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/ios-gets-web-page-text-content-via-url-__ios_1_19_20275164.html" target="_blank" title=""> IOS gets Web page text content via URL __ios <span class="time">07-31</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/ios-safari-click-event-failure-solution-__ios_1_19_20276765.html" target="_blank" title=""> IOS Safari-click event Failure Solution __ios <span class="time">08-01</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/play-offline-audio-__ios-in-ios-safari_1_19_20277326.html" target="_blank" title=""> Play offline audio __ios in IOS Safari <span class="time">08-02</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/analysis-and-implementation-of-selection-switching-effect-of-shrimp-music-channel-developed-by-ios_1_19_30000340.html" target="_blank" title=""> Analysis and implementation of selection switching effect of ... <span class="time">08-28</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/ios-development-ui-chapter-creating-a-navigation-controller-and-the-life-cycle-of-a-controller-using-storyboard_1_19_31062053.html" target="_blank" title=""> iOS Development UI chapter-Creating a navigation controller a... <span class="time">10-10</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/use-the-zxing-library-ios-barcode-in-ios_1_19_31740803.html" target="_blank" title=""> Use the zxing Library [iOS-barcode] in IOS <span class="time">12-03</span> </a> </li> </ul> </div> <div class="block1 clearfix"> <div class="cate-title"> <h2>Mac OS</h2> <a class="readMore" href="//topic.alibabacloud.com/c/mac-os_1_20_1" title="">More >></a> </div> <div class="hot_news clearfix"> <img width="150" height="100" alt="" src="https://img.alicdn.com/tfs/TB1x0zDbEz1gK0jSZLeXXb9kVXa-1080-720.jpg"> <a href="//topic.alibabacloud.com/a/mac-os-install-open-cv2-for-python__python_1_20_20253870.html"> <h3>Mac OS install open CV2 for Python__python</h3></a> <p>Turn from: http://blog.csdn.net/flyfy1/article/details/8274288 See a few install open cv2 for Python, feel a little trouble. 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class="time">08-25</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/an-array-of-oracle_1_46_30102975.html" target="_blank" title=""> An array of Oracle <span class="time">02-17</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/differences-between-for-update-and-for-update-nowait-in-oracle_1_46_30119809.html" target="_blank" title=""> Differences between for update and for update nowait in Oracle <span class="time">09-10</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/oracle-database-11g-r2-standard-enterprise-edition-download-address_1_46_30075029.html" target="_blank" title=""> Oracle Database 11G R2 Standard Enterprise Edition download a... <span class="time">01-03</span> </a> </li> <li> <a href="//topic.alibabacloud.com/a/oracle-the-chr-function-of-oracle-returns_1_46_30080938.html" target="_blank" title=""> [Oracle] The CHR function of Oracle returns <span class="time">09-28</span> </a> </li> </ul> </div> <div class="block1 clearfix"> <div 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