Does Julia have something like #ifdef in C++ for conditional compile

[johnh]

I asked a similar question related to Python debug Hope it helps.

Equivalent of Python if __debug__

In Python there is a feature for simple print style debugging to be switched on or off. If you run a Python script with the -O option then if __debug__: print variable, variable, variable Is there an equivalent in Julia? I know you could set a constant to be true or false, bt that involves editing the code to switch on/off the debug lines.