我试着:

somearray = ["some", "thing"]
anotherarray = ["another", "thing"]
somearray.push(anotherarray.flatten!)

我预期的

["some", "thing", "another", "thing"]

但有

["some", "thing", nil]

当前回答

a = ['a', 'b']
b = ['c', 'd']
arr = [a, b].flatten

这不会去除dups,但是

a|b

删除重复。

其他回答

["some", "thing"] + ["another", "thing"]

你有一个可行的想法,但#flatten!在错误的地方——它会使接收器变平,所以你可以用它把[1,2,['foo', 'bar']]变成[1,2,'foo','bar']。

毫无疑问,我忘记了一些方法,但你可以串联起来:

a1.concat a2
a1 + a2              # creates a new array, as does a1 += a2

或预先考虑/追加:

a1.push(*a2)         # note the asterisk
a2.unshift(*a1)      # note the asterisk, and that a2 is the receiver

或接头:

a1[a1.length, 0] = a2
a1[a1.length..0] = a2
a1.insert(a1.length, *a2)

或append和flatten:

(a1 << a2).flatten!  # a call to #flatten instead would return a new array

你可以使用+运算符!

irb(main):001:0> a = [1,2]
=> [1, 2]
irb(main):002:0> b = [3,4]
=> [3, 4]
irb(main):003:0> a + b
=> [1, 2, 3, 4]

你可以在这里阅读关于数组类的所有内容: http://ruby-doc.org/core/classes/Array.html

Somearray = ["some", "thing"]

Anotherarray = ["another", "thing"]

Somearray + anotherarray

a = ["some", "thing"]
b = ["another", "thing"]

将b追加到a并将结果存储在a中:

a.push(*b)

or

a += b

在这两种情况下,a都变成:

["some", "thing", "another", "thing"]

但在前一种情况下,b的元素被追加到现有的a数组中,在后一种情况下,两个数组连接在一起,结果存储在a中。