Question

将数据从R插件导入我的ruby脚本后，我有一个看起来像哈希的数组。有谁知道这里发生了什么？

r_edges.class
#=> Array < Object

r_edges[0]
#=> returns data from index 0 as expected

r_edges['GO:0010035']
# r_edges['GO:0010035']['edges'] also works
#=> returns data at the index that is named 'GO:0010035', see the to_s output below    

r_edges
#=> [  0] [
[0] [
  [ 0] 2,
  [ 1] 3,
  [ 2] 4,
  [ 3] 5,
  [ 4] 6,
  [ 5] 7,
  [ 6] 8,
  [ 7] 9,
 ...... etc.

r_edges.to_s
#=> "[GO:0006260=[edges=[2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 28, 29, 31, 32, 33, 35, 36, 37, 38, 39, 40, 41, 42, 43, 45, 46, 48, 51, 55, 56, 57, 58, 59, 60, 63, 67, 69, 71, 78, 81, 83, 84, 89, 90, 91, 92, 94, 95, 96, 97, 99, 100, 104, 108, 109, 112, 116, 117, 123, 124]], GO:0006271=[edges=[1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 28, 29, 36, 40, 46, 67]], GO:0022616=[edges=[1, 2, .... etc.

我使用Ruby Rserve gem获取数据并与R S4对象进行交互，如下所示：

con = con=Rserve::Connection.new
r_edges = con.eval("SOME S4 OBJECT").to_ruby

获取命名索引＆＃39;实际上对我很有帮助。我在循环数组时的数据，但我不知道如何访问该值。

Answer 1

它表现得很有趣，因为Ruby真棒！它允许您将功能推送到对象中而无需对其进行子类化。

来自Rserve gem rlist class：

# Returns an Array with module WithNames included
# * Unnamed list: returns an Array
# * Named List: returns a Hash. Every element without explicit name receive
#   as key the number of element, 1-based
#
def to_ruby
  data=to_a
  data.extend WithNames
  data.names=@names
  data
end

将WithNames module推入数组中，该数组有[]的几种方法（查看第121行）。

Ruby关联数组？

1 个答案: