CS50 local development

The recommendation is to use the online IDE at https://ide.cs50.io.

For offline development, there is a docker cs50-ide image documented at https://cs50.readthedocs.io/ide/offline/, but this didn't seem to work for me and comments on the site are that this is no longer supported or maintained.

Alternatively the various tools and libraries can be installed locally, with the benefit being that you can code on your local machine in a text editor of your choosing, set up as you like and of course work offline if required.

Most tools are installed using pip the package manager for python. Python 3 is required, which is the default for the latest mac OS (Catalina), but can alternatively be installed with homebrew using brew install python. Follow the instructions after install to ensure its on the path etc.

1. Install libcs50 from https://github.com/cs50/libcs50/releases
   2. Download release
   3. Unzip, cd into folder
   4. sudo make install
   5. Test by compiling any C program which includes cs50.h e.g. clang -o hello hello.c -lcs50
2. Set up virtualenv and virtualenvwrapper
   1. pip install virtualenv
   2. pip install virtualenvwrapper
   3. Add source virtualenvwrapper.sh to .zshrc (or equivalent)
3. Create a virtual environment which by default will install the various libraries etc to ~/.virtualenvs/cs50
   5. mkvirtualenv cs50
4. Activate the virtual environment
   7. workon cs50 (deactivate when no longer required)
5. Install tools to check and submit code:
   9. pip install style50
   10. Test style50 hello.c
   11. If there is an error running style50, potentially resolve by installing libmagic brew install libmagic
   12. pip install check50
   13. Test check50 cs50/problems/2020/x/hello or run locally using check50 --local cs50/problems/2020/x/hello
   14. pip install submit50
   15. Test submit50 cs50/problems/2020/x/hello