compilation

问题 I am trying to build android wear application, If I set minsdk to 20/21. It gives error below, But if I set it to 19, I get following error: /home/bhupinder/AndroidStudioProjects/MyWatch/app/src/main/AndroidManifest.xml:0:0 Error: uses-sdk:minSdkVersion 19 cannot be smaller than version 20 declared in library /home/bhupinder/AndroidStudioProjects/MyWatch/app/build/intermediates/exploded-aar/com.google.android.support/wearable/1.0.0/AndroidManifest.xml Suggestion: use tools:overrideLibrary=

问题 Ant's config file--build.xml has the property element. And according to the offical-doc,the property has the attributes-value and location. But I don't understand why we need location? Can I set the path as a value in property? Then no need for location. 回答1: location is used if you want to do relative paths. notice in this example, they use location. no absolute path needed. http://ant.apache.org/manual/using.html either location or value (mutually exclusive) can be used if you're doing

问题 If I were to do something like: printf("The string is: %s\n", "string1"); Is the following done at compile time: printf("The string is: %s\n", (unsigned char*) "string1"); Or similar? 回答1: It is defined by the standard that the type of string literals is an array of char 1 and arrays automatically decay to pointers, i.e. char* . You don't need to cast it explicitly while passing it as an argument to printf when %s specifier is used. Side note: In C++ it's const char* 2 . [1] C99 6.4.5: "A

问题 I am currently trying to get the new build system for android (http://tools.android.com/tech-docs/new-build-system/using-the-new-build-system) to work. Therefore I created a build.gradle file with the following contents: apply plugin: 'android' android { compileSdkVersion 15 target='android-15' defaultConfig { targetSdkVersion 15 minSdkVersion 8 versionCode 10 } sourceSets { main { manifest { srcFile 'AndroidManifest.xml' } } } } repositories { mavenCentral() } dependencies { compile 'com

问题 I know virtually nothing about F#. I don’t even know the syntax, so I can’t give examples. It was mentioned in a comment thread that F# can declare functions that can take parameters of multiple possible types, for example a string or an integer. This would be similar to method overloads in C#: public void Method(string str) { /* ... */ } public void Method(int integer) { /* ... */ } However, in CIL you cannot declare a delegate of this form. Each delegate must have a single, specific list of

问题 I'm supposed to use a data analysis program for a physics experiment. I can't get it to compile though. The code is old, not really compatible with current GCC-versions from what I can find. To make things a bit more time-comsuming, I got the code from a guy who had modified all the makefiles to make it compile on Mac. I have no C++-experience, but with man-pages, Google and patience I have fixed a lot of errors on the way, but I'm stuck on this one, even after a week of tries and googling. I

问题 I was following the basic tutorials on developers.android.com and came by creating the activity named DisplayMessageActivity. It is a blank activity with all the specifications given as shown in the tutorial. FYI, I am using Min SDK = API 8, Target SDK = API 16, Compile with = API 10 The next thing is that there are two errors: "The method getActionBar() is undefined for the type DisplayMessageActivity "home cannot be resolved or is not a field" I tried changing the API to 14 which called for

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Installing h5py on OS X I am trying to get h5py to work on my OS X Lion 10.7.3 Macbook Pro. It has worked before but somehow it got uninstalled and I can't get it installed again. It seems it has to do with installing XCode 4.3, but I'm not sure. When importing h5py, I get the following error: >>> import h5py Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Library/Python/2.7/site

问题 ROS Fuerte I installed on my machine uses opencv 2.2. I would like to use 2.4.9 version just installed. Its location is /home/polar/soft/lib/opencv/opencv-2.4.9/build/lib . How to do that with CMake, please? From my search, it seems that find_library would solve the issue, but was not able to make it work. ===== I include opencv in my cpp codes like this #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <opencv2/opencv.hpp> #include "opencv2/imgproc/imgproc.hpp"

问题 I recently created a query that compiles successfully and returns the desired result. When I used that piece of code as a subquery in another piece of code that a user on stackoverflow came up with for me, I encountered a few problems, which were ultimately solved. I attempted to use this query as a subquery in that piece of code given to me. However, sql fiddle doesn't return anything. No errors or compiled messages. When I tried putting in a syntax error on purpose-like a random + sign,