连接2个Julia数组而不修改它们 [英] Concatenate 2 Julia Arrays without modifying them

问题描述

我想连接2个数组.

julia> l1=["a","b"]
2-element Array{ASCIIString,1}:
 "a"
 "b"

julia> l2=["c","d"]
2-element Array{ASCIIString,1}:
 "c"
 "d"

append!可以执行此操作，但是此功能正在修改l1(该功能以!命名)

append! can do this but this function is modifying l1 (that's a function named with a !)

julia> append!(l1, l2)
4-element Array{ASCIIString,1}:
 "a"
 "b"
 "c"
 "d"

julia> l1
4-element Array{ASCIIString,1}:
 "a"
 "b"
 "c"
 "d"

我正在寻找append函数(没有感叹号).

I was looking for a append function (without exclamation point).

但是似乎不存在这样的功能.

But such a function doesn't seems to exist.

有什么主意吗?

推荐答案

除了@oleeinar的答案，您还可以使用hcat和vcat连接数组:

In addition to @oleeinar's answer, you can use hcat and vcat to concatenate arrays:

l3 = vcat(l1, l2)
4-element Array{ASCIIString,1}:
 "a"
 "b"
 "c"
 "d"

您还可以将hcat水平连接:

l4 = hcat(l1, l2)
2x2 Array{ASCIIString,2}:
 "a"  "c"
 "b"  "d"

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