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The Compiler
The Carp language is very tightly integrated with the REPL, everything you want to do to your program can be controlled from here.
To explore the commands available, enter (help) and press enter.
To load code, use (load <filename>), this will add the source file to the current 'project'. A project is a light weight concept in the repl that ties together source files and compiler settings much like in an IDE like Eclipse or Visual Studio.
To build your current project, call (build). This will emit an executable or dynamic library depending on if you have defined a main-function or not. Everything emitted by the compiler will be saved in a directory named out by default. This, and other settings regarding the project can be changed by various commands. To see a list of available commands, call (help project).
There are a bunch of handy shortcuts for doing common things at the REPL:
:r Reload all the files of the project
:b Build the project
:x Run the executable (if it exists)
:c Look at the emitted C code
:e Display the environment with all the function bindings and their types
:p Show project information and settings
:h Show the help screen
:q Quit the repl