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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 wrong in my code: $i = new RegexIterator( new ArrayIterator(array( 'test1'=>'test888', 'test2'=>'what?', 'test3'=>'test999')), '/^test(.*)/', RegexIterator::REPLACE); foreach ($i as $name=>$value) echo $name . '=>' . $value . "\n"; The iterator is empty, why? Thanks for your help! 回答1: If you ommit the operation mode (3rd parameter in your new RegexIterator statement) you'll get the matching values, like so: $array = array('test1' => 'test888', 'test2' => 'what?', 'test3' => 'test999'); $pattern = '/^test(.*)/'; echo '<pre>'; echo

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: My widget app is running fine on all android version except 8 Oreo. I get a W/BroadcastQueue: Background execution not allowed: receiving Intent message. There is an interesting blog from CommonsWare but I don't fully understand why it applies to my case. https://commonsware.com/blog/2017/04/11/android-o-implicit-broadcast-ban.html My case looks pretty simple: I have a widget with a button and I want to change the text's button when it is clicked. What is the right way to fix this issue? TestWidget.java public class TestWidget extends

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 struggle to create dll in VB which will be visible for python, none of VB functions are visible when I import dll into python Here's what I do: Simplest ever VB class Public Class MyFunctions Public Function AddMyValues(ByVal Value1 As Double, ByVal Value2 As Double) Dim Result As Double Result = Value1 + Value2 Return Result End Function End Class` I save it as a dll (Build from Visual Studio 2010) I try if it works by importing it into othoer VB project (it works fine): Imports ClassLibrary1 Module Module1 Sub Main() Dim Nowa As New

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 am having a very hard time in using the SQLite db with EF CTP5. I was just trying to execute this MSDN example with SQLite. But at the line var food = db.Categories.Find("FOOD"); I am getting a runtime exception: System.Data.SQLite.SQLiteException (0x80004005): SQLite errorno such table: Categories Note: The app.config file has to be modified and is as follows: App.config <configuration> <startup useLegacyV2RuntimeActivationPolicy="true"> <supportedRuntime version="v4.0" /> </startup> <runtime> <generatePublisherEvidence enabled="false" />

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 difference between: if( a == b ) and if( qFuzzyCompare(a, b) ) given that the variables a and b are: a = 1234.5678 b = 1234.5678 Note: I'm asking because I am having trouble comparing doubles in Qt and I want to understand how qFuzzyCompare works. 回答1: The official documentation for qFuzzyCompare() did not really explain why one would use this, but in general comparing floating point values is considered a bad practice because two seemingly identical floating point variables may be found to differ due to rounding errors. You may

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've got an SVG object that contains a linear gradient embedded directly in a document. It works fine in Chrome and Firefox, but in Safari nothing is rendered. If I create the SVG as a file and embed it using the Object tag, it works fine in Safari. Other shapes and fills work, it's just linear gradient that doesn't work. I guess I could use the object, but I'd prefer to embed the SVG directly. I've create a demo here (works in Chrome, not Safari): http://jsfiddle.net/sjKbN/ I came across this answer which suggests setting the content type

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: Can Anyone please explain How Style Index in OpenXml works? I have a business requirement where I need to apply background color to certain cells in an excel sheet. And Some style is already applied to other cells. So I need to decide which style Index I need to apply. 回答1: OpenXML styling can be confusing when you take the first look at it. Excel document styling falls under the SpreadsheetML markup language, which is different from Word and PowerPoint.. For typical cells in Excel, the only style information required is the StyleIndex (as

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 want to dynamically change TextBlock text in my Class. XAML-Code : C# : string footerMainMenuText = "Setting" ; Binding set = new Binding ( "" ); set . Mode = BindingMode . OneWay ; set . Source = footerMainMenuText ; Footer_text . DataContext = footerMainMenuText ; Footer_text . SetBinding ( TextBlock . TextProperty , set ); I checked last line, and the Footer_text.Text is set correctly. ( Footer_text.Text="Setting" ), but TextBlock in my application doesnt show "Setting". What is the problem here? 回答1: If you are binding - why

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 was trying to use live reload on my ionic 2 application. so i found this command ionic run browser -- live - reload is not working as expected and while making code changes i am receiving console messages [ 16 : 12 : 47 ] build started ... [ 16 : 12 : 47 ] transpile update started ... [ 16 : 12 : 47 ] transpile update finished in 46 ms [ 16 : 12 : 47 ] deeplinks update started ... [ 16 : 12 : 47 ] deeplinks update finished in 248 ms [ 16 : 12 : 47 ] webpack update started ... but the page isn't reloading 回答1: i found the solution in the

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 am very new to SAS. Now, I have a SAS data table as following: ID score ------------------- 01 1 02 3 03 4 04 2 Is there any way to save the number of observations in this table using only PROC SORT and DATA step ? I want to hold the value in the log window, which is like "hold N=4" in the SAS log script. Sorry for my unprofessional description. Thanks in advance. 回答1: Use the nobs = in the set statement. data _null_; set xyz nobs=nobs; put "HOLD N=" nobs ; stop; run; 回答2: As a new SAS user, the NOBS option may be all you need. However, as