compilation

问题 I think I am failing to understand java package structure, it seemed redundant to me that java files have a package declaration within, and then are also required to be present in a directory that matches the package name. For example, if I have a MyClass.java file: package com.example; public class MyClass { public static void main(String[] args) { System.out.println("Hello, World"); } } Then I would be required to have this file located in com/example , relative to the base directory, and I

问题 I am trying to compile my JasperReports template using an Ant script and Java. I am getting this error: jasper java.lang.NoClassDefFoundError: org/codehaus/groovy/control/CompilationFailedException There is nothing complex in the template, but I still can't compile. 回答1: You will have to set the language value in your template to Java. There are two ways you can do this: If you are using iReport, select the root object in your Report Inspector (the one with the same name as your report). Then

问题 I am trying to cross-compile a go app on OSX to build binaries for windows and linux. I have read everything what I could find on the net. Closest example that I have found has been published on (apart from many unfinished discussions on go-nuts mailing list): http://solovyov.net/en/2012/03/09/cross-compiling-go/ yet it does not work on my installation. I have go 1.0.2. As 1.0.2 is quite recent it looks to me that all above examples do not apply to this version. Tried to do ./make.bash --no

问题 I came across several SO questions regarding specific aspects of improving the turn-around time of CMake enabled C++ projects lately (like "At what level should I distribute my build process?" or "cmake rebuild_cache for just a subdirectory?"), I was wondering if there is a more general guidance utilizing the specific possibilities CMake offers. If there is probably no cross-platform compile time optimization, I'm mainly interested in Visual Studio or GNU toochain based approaches. And I'm

问题 Suddenly when Syncing Gradle, I get this error: WARNING: API 'variant.getJavaCompile()' is obsolete and has been replaced with 'variant.getJavaCompileProvider()'. It will be removed at the end of 2019. For more information, see https://d.android.com/r/tools/task-configuration-avoidance Affected Modules: app I've got this build.gradle for the app module: apply plugin: 'com.android.application' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' apply plugin: 'com.google

问题 I am having python files with the import statements which I would like to replace into the actual code placed in the foo.py. For instance, with the in file: from foo import Bar bar = Bar() print bar I would like to out file below: # source of Bar class. bar = Bar() print bar How can I perform such imports replacement ? 回答1: I suggest you to use the ast.NodeTransformer in order to accomplish such import replacement. AST provides way to interact with the python code as with the trees of the

问题 Basically what the title says: what's the process for compiling your average go* file? drop it on a compiler and execute the result? *note: The OP edited the question replacing "go" with "C", before it was rolled back. So some of the answers won't make sense. 回答1: Did you take a look at the Go tutorial at http://golang.org/doc/go_tutorial.html Here's how to compile and run our program. With 6g, say, $ 6g helloworld.go # compile; object goes into helloworld.6 $ 6l helloworld.6 # link; output

问题 I know its to do with compiler optimization, but I am looking for a real deep dive into how/why and how to ensure i am notified of this behaviour in real code. I have this code void swap(char *s) { strcpy(s, "nope!"); printf("Result: %s\n", s); }; void main(){ ... swap("this should segfault"); ... } obviously, it should segfault, but visual studio in release mode reduces it down to just inlining the printf. This seems like the kind of thing that could really bite me in the ass later, so i

问题 Android resource compilation failed Output: C:\projects\template\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:218: error: duplicate value for resource 'attr/layout_anchorGravity' with config ''. C:\projects\template\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:218: error: resource previously defined here. Command: C:\Users\music7.gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows.jar

问题 Android resource compilation failed Output: C:\projects\template\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:218: error: duplicate value for resource 'attr/layout_anchorGravity' with config ''. C:\projects\template\app\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml:218: error: resource previously defined here. Command: C:\Users\music7.gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows.jar