preprocessor

问题 This question already has answers here : Is it possible to iterate over arguments in variadic macros? (9 answers) Closed 7 months ago . When deriving a class from a template base class, one is forced to use the syntax this->member , or using Base::member to get access to a member of the base class. The same would happen if the base class is a generic template parameter and one is sure that some members exists. Would it be possible to write a macro that "import" all members of the base class

问题 This is presumably an almost carbon copy of Using XSLT as an XML pre-processor But as the OP of that question did not post a full example, despite being asked to, the replies are no use to anyone not familiar with XSLT. Neither have extensive web searches turned up anything helpful - XSLT seems remarkably poorly documented and little discussed on the Web. Anyway ... I have an XML file, say foo.xml, as follows (greatly simplified, obviously): <?xml version="1.0" encoding="UTF-8"?> <main> <fee

问题 I'm starting a project the NG6-Kit-starter. I'm using WebStorm. I want to be able to debug my unit tests using WebStorm, so I followed this tutorial. I can run unit test from WebStorm but I can't put breakpoints, it never stops at breakpoints and I have don't know why. I suspect it has to do something with the fact that I'm using a preprocessor in my karma config file. preprocessors: { 'spec.bundle.js': ['webpack', 'sourcemap'] }, See below my full karma.config.js module.exports = function

问题 I've defined an AES-128 key as a build symbol inside my IDE, so that it calls GCC like this: arm-none-eabi-gcc -D"AES_KEY=3B7116E69E222295163FF1CAA1681FAC" ... (which is equivalent to #define AES_KEY 3B7116E69E222295163FF1CAA1681FAC ) The advantage is that the same symbol can also be passed automatically as a parameter to a post-build CLI script that encrypts the compiled code with this key (e.g. for a secure firmware update)... But how to store this key as a byte array in my code? I would

问题 I'm running my source file through the C preprocessor twice before compiling it, and I want to delay The #include directives until the second pass. Intuitively, I tried this, but it doesn't work: ##include <zlib.h> I just need a construct, that when preprocessed, will give #include mylib . 回答1: You could define a macro, like #define INCLUDE #include and then when you include stuff, use the macro instead. INCLUDE <zlib.h> In GCC's preprocessor, at least, that gives me #include <zlib.h> . 来源：

问题 In Grunt I used to use a plugin called env . That would allow me to define an environment in specific build. I had 3 builds. One was DEV which would use all the files split up individually. PROD would concat everything and RELEASE would concat and uglify. I'm looking to do the same in Gulp. I do see a preprocessor for Gulp but nothing to define environment. The question is. What can I do? Obviously I don't want to define all JS files all the time, and I don't want 3 different HTML pages with

问题 Why doesn't #IF Not DEBUG work the way I'd expect in VB.NET? #If DEBUG Then Console.WriteLine("Debug") #End If #If Not DEBUG Then Console.WriteLine("Not Debug") #End If #If DEBUG = False Then Console.WriteLine("Not Debug") #End If ' Outputs: Debug, Not Debug But, a manually set const does: #Const D = True #If D Then Console.WriteLine("D") #End If #If Not D Then Console.WriteLine("Not D") #End If ' Outputs: D And, of course, C# has the expected behavior as well: #if DEBUG Console.WriteLine(

问题 I have a project which needs to be used in 4.6 and 5.0 versions of blackberry. I have run same code in both the 4.6 and 5.0 versions with some preprocessor directives attached to the code (#ifndef statements which i need to use for 5.0 as facebook sdk is not supported in 4.6 version) I have 2 .cod files ( one for 4.6 and other for 5.0) they work as needed in their respective simulators. But, when i load the .cod file of 4.6 into 5.0 ... (it treats it as the code inside preprocessor as comment

问题 Using the profile module I've created a textfield called profile_real_name which the user fills out when registering. How do I access this variable in the node.tpl.php? I used the dsm($user) function to output the user variables and it contained everything except the data for the profile_real_name I also ran dsm($vars) on the phptemplate_preprocess_user_profile and I could see it contained an object called account which did contain the info I needed but this object isn't available in the

问题 From time to time, I use write-host in my scripts to do poor-man debugging/ logging, but having all of them fire on each run clutters my screen with tons of unneeded info. Of course, I can comment/ uncomment the ones I need for the current run but this is a lot of editing and very error-prone. here is what I finally came to: [cmdletbinding()] param( [parameter()] [string[]]$dbg_points=@('*') ) $debug = ($PSCmdlet.myInvocation.BoundParameters['Debug'].isPresent -eq $true) $dbg_all = $dbg