Making an .exe that executes source file inside itself.

[BoQsc via Digitalmars-d-learn]

So there has been idea I've got for around few months now: making 
a software which executable would contain a source file.
A software that anyone could modify by opening an executable and 
quickly change a few lines of it, rerun an executable, see the 
changes.

Could this be easily possible with D language, considering that 
sources files can be ran without long slow compilation process?