1st-order explicit Euler time integration

Gravity model. Supported: Newton, MOND1983Milgrom, QUMOND

Leapfrog time integration

Milgrom 1983 formula of MOND

Traditional Newtonian gravity

Logging with progress bar

QUasi-linear MOdified Newtonian Dynamics

4-th order Runge-Kutta time integration

function emptyfunction(args...) end

Accept any outputs but doing nothing.

It is designed for initializing callback functions

function needtointerrupt(OutputDir::String)

If there is a file named `stop` in folder `OutputDir`, return true; else, return `false`.

Keywords

• remove: if true, remove the stop file asynchronously
• delay: if true, wait for 0.1 second to avoid file locking error

function randin(T, a, b) function randin(a, b)

Generate uniform random number in [a,b]. It avoids error from rand(a:b) where a and b are Unitful.Quantity

Better printing of trait types