ArgumentError: collection must be non-empty in extrema at reduce.jl:337 in classical_mds at /Users/rprechelt/.julia/v0.4/MultivariateStats/src/cmds.jl:75 in transform at /Users/rprechelt/.julia/v0.4/ManifoldLearning
:7) at com.series0ne.ApplicationKt.main(Application.kt:4)上的线程"main“kotlin.KotlinNullPointerException中的异常但是,对于非空参数,则永远不会访问该参数。为什么Kotlin在没有访问空引用的情况下仍然强制抛出KotlinNullPointerException?