如何在Julia中传递条件内的参数？

让我们假设页面中有多个墙的反弹球的示例1：

并考虑条件：

  function condition(out,u,t,integrator) # Event when event_f(u,t) == 0
   out[1] = u[1]
   out[2] = (u[3] - 10.0)u[3]
  end

但是，假设我想要值“10.0”作为参数（例如，“h”）。有没有这样的写作方法

  function condition(out,u,t,integrator) # Event when event_f(u,t) == 0
   out[1] = u[1]
   out[2] = (u[3] - h)u[3]
  end

---

请考虑后面列出的同一页上的代码：

dosetimes = [4.0,8.0]
condition(u,t,integrator) = t ∈ dosetimes
affect!(integrator) = integrator.u[1] += 10
cb = DiscreteCallback(condition,affect!)
sol = solve(prob,Tsit5(),callback=cb,tstops=dosetimes)
plot(sol)

这里，

条件（U，t，积分器）

取决于

剂量时间

。因此，您也应该能够这样做：

const h = [10.0] # h is a global const, but h[1] can be changed if needed
function condition(out,u,t,integrator) # Event when event_f(u,t) == 0
    out[1] = u[1]
    out[2] = (u[3] - h[1])u[3]
end