我想知道是否有一种方法可以使用Symbols进行多次调度,但是还包括“全部捕获”方法。即像
function dispatchtest{alg<:Symbol}(T::Type{Val{alg}})
println("This is the generic dispatch. The algorithm is $alg")
end
function dispatchtest(T::Type{Val{:Euler}})
println("This is for the Euler algorithm!")
end
第二个可以使用并与手册中的内容相匹配,我只是想知道您如何使第一个可以使用。
最佳答案
您可以这样操作:
julia> function dispatchtest{alg}(::Type{Val{alg}})
println("This is the generic dispatch. The algorithm is $alg")
end
dispatchtest (generic function with 1 method)
julia> dispatchtest(alg::Symbol) = dispatchtest(Val{alg})
dispatchtest (generic function with 2 methods)
julia> function dispatchtest(::Type{Val{:Euler}})
println("This is for the Euler algorithm!")
end
dispatchtest (generic function with 3 methods)
julia> dispatchtest(:Foo)
This is the generic dispatch. The algorithm is Foo
julia> dispatchtest(:Euler)
This is for the Euler algorithm!
关于julia - 带符号的通用调度,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/39314925/