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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: I've been hearing these two words used in Microsoft tutorials for VB.NET. What is the difference between these two words when used in reference to variables? 回答1: Value vis-a-vis Reference Types Variables in C# are in 1 of 2 groups. Value types or Reference types. Types like int and DateTime are value types. In contrast, any class you create is a reference type. C# strings are also a reference type. Most things in the .NET framework are reference types. Parts of a Variable There is the variable name and it's value . Two parts . The variable

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: Just installed a fresh version of Kepler 64bit "for Java Developers" on Yosemite, getting this error on first launch. Any thoughts on how to fix? Really do not want to downgrade my Java version! 回答1: I just encountered this in another Eclipse-based app on Yosemite and figured out (with help from the references below) how to get the app running without installing the legacy Java SE 6 JRE. Here are the steps in case it helps other devs get Eclipse working. PRECONDITIONS $ sw_vers -productVersion 10.10.1 $ java -version java version "1.8.0_25"

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 need to run a python code using a local python 3.5 installation (I have no access to the system administration and the main system uses python 2.7). I managed to install python and I also downloaded the latest version tcl/tk from here http://www.tcl.tk/software/tcltk/download.html which I managed to configure and install correctly on a local path. After installing tcl/tk I run the python configure again and installed again since I read somewhere that that should fix it but I'm still getting this error. File "/local/path/to/python3.5/python

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 have done a lot of server side form validation but until now, the only client side form validation I have done is to check for null/blank entries (e.g., if (value==''||value==null) ). I am now checking for user-entered vulgarities and have found success checking for these (incorporated into one variable - vulgarcheck) using javascript as follows: <script language = "javascript" type = "text/javascript" > function CheckUserForm () { var usersuggestion = document . forms [ 'UserForm' ][ 'userinput' ]. value ; var vulgarcheck =

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 using an API from an external partner. Unfortunately, the returned response does not seem to have a fixed structure. Ideally, an API contract means it won't be violated but this keeps happening. Anyways, so what is happening is a field in the JSON response is mostly a map but sometimes, out of the blue it is a list. For example, suppose that following is the response I usually get: { "majorInfo" : { "a" : "b" }, "minorInfo" : { "c" : "d" } } But on rare occasion I'd get a list instead of a map or some other violation of the contract.

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 trying to create an expression tree. I need to read data from a data table and check its columns. The columns to be checked and also the number of columns to be checked are known at run time only. The column names are given to me as a string array and and each column has a List of strings to be checked. I tried out sample expression trees , like the one below. Here I am encountering an error. Static method requires null instance, non-static method requires non-null instance. Parameter name: instance at the line inner = Expression.Call

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 an applet that communicates with a servlet using Http (Not sockets). Currently, each instance of the applet (i.e. when each applet is run by a different client on a different computer), all the instances communicate with the same servlet. What I want is that each instance of the applet communicate with different instances of the same servlet . Is this possible? 回答1: You don't want to have different instances of the same servlet in webapp's lifetime. The normal practice is to use the HttpSession to distinguish between clients. You need

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: Delphi IDE uses InstallAware as installer in last few releases (2010, XE, XE2, XE3, XE4). Using the normal setup.exe installation will copy a few GB of files into c:\programdata if you install all the IDE releases. The installer consumes disk spaces quickly especially for users who use an SSD hard disk that is expensive. Is it possible to setup the Delphi IDEs without copying files to c:\ProgramData? Is it advisable to delete those files manually after installation too? Uninstalling a previous version of the IDE does delete these files but

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: Recently, Instagram logo has changed as you all know. I need vector logo but it is not possible, I mean gradients. Is there any css code for new logo? 回答1: Here is the css code for background color: .instagram{ width:100px; height:100px; background: #f09433; background: -moz-linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%); background: -webkit-linear-gradient(45deg, #f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366 75%,#bc1888 100%); background: linear-gradient(45deg, #f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366

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: to run both 3.5 and 4.0 web apps? 回答1: I remember reading something once from Microsoft that stated: ".NET 4.0 adds in-process side-by-side compatibility with earlier versions of the Framework. This feature allows an application process to simultaneously run part of its code using the .NET Common Language Runtime (CLR) 4 and other parts using older versions of the CLR." So to answer your question you only need both if your application uses features from both or altenatively you have separate web applications that use .NET 3.5 and .NET 4.0.