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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: what is the use of using hhx instead of x ,in the code below mac_str is char pointer and mac is a uint8_t array , sscanf(mac_str,"%x:%x:%x:%x:%x:%x",&mac[0],&mac[1],&mac[2],&mac[3],&mac[4],&mac[5]); when i try the above code it giving warning , warning: format ‘%x’ expects argument of type ‘unsigned int *’, but argument 8 has type ‘uint8_t *’ [-Wformat] but i saw in some code they specified sscanf(str,"%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",&mac[0],&mac[1],&mac[2],&mac[3],&mac[4],&mac[5]); which dont give any warning but both are working the same ,

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have several tests which test the UI and also serve to create data along the way. A separate set of tests rely on this data, meaning that these must run only after the first set have run. I know about running a group of them, or running them with tags, but how can I run them in a specific order? 回答1: Nightwatch will run each test within a particular file in order, so one (naive) solution would be to put every test in the same file, in the order you want them to run. This will get unwieldy if you have too many tests for a single file. To

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm writing a shell script, and I need to create a temporary file with a certain extension. I've tried tempname=`basename $0` TMPPS=`mktemp /tmp/${tempname}.XXXXXX.ps` || exit 1 and tempname=`basename $0` TMPPS=`mktemp -t ${tempname}` || exit 1 neither work, as the first creates a file name with a literal "XXXXXX" and the second doesn't give an option for an extension. I need the extension so that preview won't refuse to open the file. Edit: I ended up going with a combination of pid and mktemp in what I hope is secure: tempname=`basename $0

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I wonder if there is other way how to create new Date in Groovy at specific date and time than parse it from String with Date.parse method. Can I get complete list of Date creation in Groovy? 回答1: You can use the existing Java methods to create a date: // takes the date encoded as milliseconds since midnight, January 1, 1970 UTC def mydate = new Date(System.currentTimeMillis()) // create from an existing Calendar object def mydate = new GregorianCalendar(2014, Calendar.APRIL, 3, 1, 23, 45).time Groovy also provides some streamlined

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to install code from a repository's branch on a pod spec, and based on the documentation, this should work: s.dependency 'repository_name', :git => 'https://github.com/account_name/repository_name.git', :branch => 'experimental_branch' But I get an error with something like [!] Unsupported version requirements. Updating CocoaPods might fix the issue. It works when installing from a pod file directly: pod 'ObjectiveRecord', :git => 'https://github.com/supermarin/ObjectiveRecord.git', :branch => '2-0-experimental' Does anyone know?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm getting an unable to locate model error. $this->load->model('1/Gift_model'); My model file name is gift_model.php within /models/1/. I declare the model the following way. class Gift_model extends CI_Model { According to CodeIgniter's documentation I'm doing it the correct way. Any suggestions? I have 5 other models named exactly the same way and they're all loading fine. 回答1: Make the model class name Uppercase My_model Make the model php file name Lowercase my_model Load the model using Lowercase (file name) $this->load->model('my

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Having a list with links like this: <ul> <li><a href="#">First tab</a></li> <li><a href="#">Second tab</a></li> <li class="active"><a href="#">Active tab</a></li> <li><a href="#">Fourth tab</a></li> <li><a href="#">Fifth tab</a></li> </ul> How can be found element before and after the active tab? (In this case, the second and fourth tab). I am looking for solution in pure JavaScript only, as jQuery solution is here . Note: nextElementSibling and previousElementSibling are not supported by IE8 and FF3, so please post solutions that would be

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I programmed a little tool in VBA which generates a sheet with some statistics on it. I want to automatically have a printable worksheet, so I set the VPageBreak like this: ActiveWindow . View = xlPageBreakPreview ActiveSheet . VPageBreaks ( 1 ). DragOff Direction := xlToRight , RegionIndex := 1 ActiveWindow . View = xlNormalView At first this worked just fine. But the content of this generated worksheet is based on data in another worksheet and when this data changed, the DragOff-Command threw an error. The error occured because

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How can I get a list of all the tables that have a specific column name? 回答1: Pretty simple on a per database level Use DatabaseName Select * From INFORMATION_SCHEMA.COLUMNS Where column_name = 'ColName' 回答2: select table_name from information_schema.columns where COLUMN_NAME = 'MyColumn' 回答3: You can use the information schema views: SELECT DISTINCT TABLE_SCHEMA, TABLE_NAME FROM Information_Schema.Columns WHERE COLUMN_NAME = 'ID' Here's the MSDN reference for the "Columns" view: http://msdn.microsoft.com/en-us/library/ms188348.aspx 回答4:

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I get this warning while running a python program (some basic web automation using selenium): warning: Debugger speedups using cython not found. Run '"/usr/bin/python3.5" "/root/.p2/pool/plugins/org.python.pydev_4.5.5.201603221110/pysrc/setup_cython.py" build_ext --inplace' to build. pydev debugger: starting (pid: 3502) How can I address this issue? 回答1: This is as expected. Run "/usr/bin/python3.5" "/root/.p2/pool/plugins/org.python.pydev_4.5.5.201603221110/pysrc/setup_cython.py" build_ext --inplace as it asks to get the debugger