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cxx

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philtomson
philtomson commented Jun 28, 2018

was just watching the C++ Now presentation on Julia and C++ (https://www.youtube.com/watch?v=hvnxY3NjHQ4) and noticed in the section on Cxx.jl (around 48 minutes in) that there is a special assignment syntax in the REPL ":=" for assigning C++ results back to a Julia variable.

I don't see this documented anywhere here in the docs.

springmeyer
springmeyer commented Mar 13, 2018

The llvm/clang++ compiler used and provided by mason needs a full XCode installation available. Otherwise you'll hit a warning like:

clang-5.0: warning: no such sysroot directory: '/Library/Developer/CommandLineTools/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk' [-Wmissing-sysroot]

And an error when the program tries to use something from the C standard library. For example:

RallyTronics
RallyTronics commented Jan 15, 2020

I get a null pointer exception on line 161 "this->graphics_context._Mypair._Myval2 was nullptr."

auto canvas = graphics_context->create_canvas(size, canvas_flags);

in the window::draw() function

void window::draw()
  {
    graphics::canvas_flags canvas_flags;
    if(flags.test(window_flag::anti_alias))
      canvas_flags |= graphics::canvas_flag::anti_alias;

    auto canvas 

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