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How to check iOS version?

... Can I use guard in Objective-C instead of leaving the block open and indent in else statement? – Legoless Sep 19 '17 at 15:44 ...
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Chain-calling parent initialisers in python [duplicate]

...ar though. Python is strong-dynamic. Something like Java is strong-static. PHP is weak-dynamic. Static typing guarantees (within some limits at least) that input parameters are the correct type. Strong typing means that the compiler/runtime will not attempt to coerce the value of one type to another...
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What is the difference between “AS” and “IS” in an Oracle stored procedure?

...sidering previous answers, I guess AS is for stand alone (outside of any block, subprogram, package) entities and IS is for embedded (within a block, subprogram or package) entities. . share | ...
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live output from subprocess command

...utput. The only advantage of the file approach is that your code doesn't block. So you can do whatever you want in the meantime and read whenever you want from the reader in a non-blocking way. When you use PIPE, read and readline functions will block until either one character is written to the p...
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CSS Image size, how to fill, not stretch?

...> CSS .container { width: 300px; height: 200px; display: block; position: relative; overflow: hidden; } .container img { position: absolute; top: 0; left: 0; width: 100%; } It's a pain in CSS to do what you want and center the image, there is a quick fix ...
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Android Whatsapp/Chat Examples [closed]

...s on Android, application makes http request to a server, implemented in php and mysql, to authenticate, to register and to get the other friends' status and data, then it communicates with other applications in other devices by socket interface. EDIT : Just found this! Maybe it's not rela...
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CSS selector by inline style attribute

...d can be matched with a substring attribute selector: div[style*="display:block"] It is for this very reason however that it's extremely fragile. As attribute selectors don't support regular expressions, you can only perform exact substring matches of the attribute value. For instance, if you hav...
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When should we call System.exit in Java

...an unknown thread. System.exit never exits normally because the call will block until the JVM is terminated. It's as if whatever code is running that has the power plug pulled on it before it can finish. Calling System.exit will initiate the program's shutdown hooks and whatever thread that calls...
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当ORACLE 11G 遇到 JUNIPER 防火墙 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

...行。 网上搜索到类似的问题 http://www.itpub.net/forum.php?mod=viewthread&tid=1757430&extra=&highlight=&page=1类似的问题但是没有给出解决办法。 http://zhidao.baidu.com/link?url=bklnlNgKPzMAx5-4C0je8Tz8nWIqiNbJNl0gUvQDC6qKUCO4VPIlXj7faNaour9OeCsYAt4osHPsMHweSatQmq...
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Unknown column in 'field list' error on MySQL Update query

... Thank you. I was trying to figure out why my query in PHP was not working, all I had to do was add the single quotes. – RiCHiE Jul 2 '16 at 5:12 1 ...