julia - Julia 中模块和结构之间的名称冲突

Question

我想确认我不能有一个名为 Test 的结构体在定义为 Test 的模块中定义.

文件 main.jl :

# MAIN PROGRAM

include("test.jl")
import .Test

t = Test.Test(3,4)
println(t)

文件 test.jl :

module Test

        struct Test
            a::Int
            b::Int
        end

end

我得到:

$ /usr/local/julia-1.2.0/bin/julia main.jl
ERROR: LoadError: LoadError: invalid redefinition of constant Test
Stacktrace:
 [1] top-level scope at /usr/home/user/test/test.jl:3
 [2] include at ./boot.jl:328 [inlined]
 [3] include_relative(::Module, ::String) at ./loading.jl:1094
 [4] include(::Module, ::String) at ./Base.jl:31
 [5] include(::String) at ./client.jl:431
 [6] top-level scope at /usr/home/user/test/main.jl:3
 [7] include at ./boot.jl:328 [inlined]
 [8] include_relative(::Module, ::String) at ./loading.jl:1094
 [9] include(::Module, ::String) at ./Base.jl:31
 [10] exec_options(::Base.JLOptions) at ./client.jl:295
 [11] _start() at ./client.jl:464
in expression starting at /usr/home/user/test/test.jl:3
in expression starting at /usr/home/user/test/main.jl:3

Answer 1

I would like to confirm that I can not have a struct named Test defined in a module defined as Test.

你不能。每个模块都有一个自绑定(bind)，所以在 Test 里面模块Test name 已经被占用(由模块本身)。