Another commit in my quest to rid InterpreterBase from all higher
level object processing logic.
Additionally, there is a a logic change here, since `str.join` now
uses varargs and can now accept more than one argument (and supports
list flattening).
D lang compilers have an option -release (or similar) which turns off
asserts, contracts, and other runtime type checking. This patch wires
that up to the b_ndebug flag.
Fixes#7082
bool to_int() will return 0 or 1, useful if one wants to set
a define to 0 or 1 based on a boolean result instead of having
it just defined or undefined.
bool to_string() will return 'true' or 'false' by default same
as when using it to format a string, but with the additional
possibility to specify two extra string arguments to be returned
as true/false values, e.g. to_string('yes', 'no'). This can be
useful when outputting messages to be shown to the user.
Daniel Mensinger
Jussi Pakkanen
Tristan Partin
Stéphane Cerveau
Dylan Baker
Nirbheek Chauhan
Niklas Claesson
Tim 'mithro' Ansell
Joergen Ibsen
Tim-Philipp Müller