Question

我仍然是编程的新手，我正在尝试将字符串数组转换为带符号的哈希。字符串的格式化让我感到悲伤：

foobar = ["ABC: OPEN", "123: OPEN", "FOO: CLOSED", "BAR: CLOSED", "XYZ: OPEN", "LMO: CLOSED"]

我正在尝试将此“name：status”格式转换为哈希，其中键可以是符号：

foobar_hash = {"ABC" => :OPEN, "123" => :OPEN, "FOO" => :CLOSED, "BAR" => :CLOSED, "XYZ" => :CLOSED, "LMO" => :CLOSED}

实现这一目标的最佳方法是什么？

Answer 1

这样的东西？

arr = [
  "ABC: OPEN",
  "123: OPEN",
  "FOO: CLOSED",
  "BAR: CLOSED",
  "XYZ: OPEN",
  "LMO: CLOSED"
]

Hash[arr.map { |x| x.split ": " }]

=> {"ABC"=>"OPEN",
"123"=>"OPEN",
"FOO"=>"CLOSED",
"BAR"=>"CLOSED",
"XYZ"=>"OPEN",
"LMO"=>"CLOSED"}

如果您需要符号键/值：Hash[arr.map { |x| x.split(": ").map(&:to_sym) }]

Answer 2

还有一种方法： -

arr = [
  "ABC: OPEN",
  "123: OPEN",
  "FOO: CLOSED",
  "BAR: CLOSED",
  "XYZ: OPEN",
  "LMO: CLOSED"
]

arr.each_with_object({}) do |string, hash| 
  key, val = string.scan(/\w+/)
  hash[key] = val.to_sym
end

# => {"ABC"=>:OPEN,
#     "123"=>:OPEN,
#     "FOO"=>:CLOSED,
#     "BAR"=>:CLOSED,
#     "XYZ"=>:OPEN,
#     "LMO"=>:CLOSED}

Answer 3

你可以这样做：

[4] pry(main)> foobar = ["ABC: OPEN", "123: OPEN", "FOO: CLOSED", "BAR: CLOSED", "XYZ: OPEN", "LMO: CLOSED"]

=> ["ABC: OPEN", "123: OPEN", "FOO: CLOSED", "BAR: CLOSED", "XYZ: OPEN", "LMO: CLOSED"]
[5] pry(main)> foobar.map { |i| i.split(": ") }.to_h
=> {"ABC"=>"OPEN",
 "123"=>"OPEN",
 "FOO"=>"CLOSED",
 "BAR"=>"CLOSED",
 "XYZ"=>"OPEN",
 "LMO"=>"CLOSED"}

如果您需要colon前面的value，您也可以这样做：

[14] pry(main)> foobar.map { |i| i.gsub(": ", " :") }.map { |j| j.split(" ") }.to_h
=> {"ABC"=>":OPEN",
 "123"=>":OPEN",
 "FOO"=>":CLOSED",
 "BAR"=>":CLOSED",
 "XYZ"=>":OPEN",
 "LMO"=>":CLOSED"}

如果您需要将值作为符号，可以再做一次迭代，您可以这样做：

[35] pry(main)> foobar.map { |i| i.split(": ") }.each_with_object({}) do |array, hash|
[35] pry(main)*   hash[array.first] = array.last.to_sym
[35] pry(main)* end

=> {"ABC"=>:OPEN, "123"=>:OPEN, "FOO"=>:CLOSED, "BAR"=>:CLOSED, "XYZ"=>:OPEN, "LMO"=>:CLOSED}

Answer 4

这可能有效：

foobar_hash = {}
foobar.each { |s| foobar_hash[s.split(":")[0].strip] = s.split(":")[1].strip.to_sym }

Answer 5

foobar = ["ABC: OPEN", "123: OPEN", "FOO: CLOSED", "BAR: CLOSED", "XYZ: OPEN", "LMO: CLOSED"]
foo_hash = Hash.new
foobar.each { |str| k,v = str.split(': '); foo_hash[k] = v.to_sym }

foo_hash给你

=> {"ABC"=>:OPEN, "123"=>:OPEN, "FOO"=>:CLOSED, "BAR"=>:CLOSED, "XYZ"=>:OPEN, "LMO"=>:CLOSED}

Answer 6

你可以试试这个

keys = "foobar".map{|s|s.split(':')}.map(&:first)
values = "foobar".map{|s|s.split(':')}.map(&:last)

Hash[keys.zip(values)]

将ruby数组转换为带符号的哈希

6 个答案: