METAL_TCL_PACKAGE(GetStarted, "1.0", mod)
{
  metal::tcl::create_command(mod, "hello")
    .add_function(
        +[](boost::core::string_view name)
        {
          std::cout << "Hello " << name << "!" << std::endl;
        });
}

load ./libgetstarted[info sharedlibextension]

hello [lindex $argv 1]

This C++17 library makes it easy to extend tcl with C++ or vice versa. It requires boost and TCL.

Read the docs here.

Tcl is a unique combination of a full script language with a command language. You can execute other programs with tclsh, like this:

g++ hello_world.cpp

while at the same time load and execute arbitrary C or C++ code, e.g.:

load ./libbuildhelpers[info sharedlibextension]

g++ [list-sources]

where list-sources is a command defined in C++.

Since tcl can be embedded in C++ as well, it is also a great starting point for interactive console applications; and because of the syntax it can be used to create DSLs that do not look and feel like Tcl. redis and sqlite started out that way.

Distributed under the Boost Software License, Version 1.0.