When we put the jni folder under projects and compile it using command line tool ndk-build, we will get libs & obj folders like this: |–jni |–libs |—-armeabi-v7a |–obj But under Android Studio develop environment, android studio can’t find the so files under libs folder. We can do it by using following folder structure under Android Studio: |—app |——jni |——libs |——obj |——src |———androidTest |———main We can use this folder structure to compile JNI.

If you are under Windows, you may need to config golang develop environment manually. Get Emacs go-mode from misc/emacs/, there are two files: go-mode-load.el and go-mode.el. Put them into your Emacs load-path, then add following code to .emacs: ;; golang mode (add-to-list ’load-path “~/emacs/site-lisp/go-mode”) (require ‘go-mode-load) (require ‘go-mode) Then you can open go source file with syntax highlight now. If you are under Ubuntu/Debian, the easiest way to install golang-mode is by:

If you have a keyboard with two Alt keys (e.g. a US Keyboard), you will find that PuTTY doesn’t recognize the one on the right side. It is a fatal problem if you are using Emacs in putty on Windows to editing files on a remote computer. After doing some reasearching on it, I think there are two soluctions for this problem. Easily fixed the problem with a simple registry edit

While I make my cpp source files linking ZeroMQ under Ubuntu, I got following error: /usr/bin/ld: test_server.o: undefined reference to symbol ‘zmq_strerror’ /usr/bin/ld: note: ‘zmq_strerror’ is defined in DSO /usr/local/lib/libzmq.so.3 so try adding it to the linker command line /usr/local/lib/libzmq.so.3: could not read symbols: Invalid operation The ZeroMQ library has already installed. By checking the man: Libraries have been installed in: /usr/local/lib If you ever happen to want to link against installed libraries in a given directory, LIBDIR, you must either use libtool, and specify the full pathname of the library, or use the `-LLIBDIR’ flag during linking and do at least one of the following:

Django-Chartit looks like a good tool for drawing some data charts under Python Django framework. But it is a little hard to get it ready for work. Here I remind of two key steps while using Chartit: add chartit to your INSTALLED_APPS. install simplejason if you get ‘use_decimal’ error. The error message is something like: TypeError at /charts/ __init__() got an unexpected keyword argument ‘use_decimal’ I don’t think Chartit is the best choice current now, and I prefer Chart.