Ruby 数组到字符串的转换

Question

I have a ruby array like ['12','34','35','231'] .

I want to convert it to a string like '12','34','35','231' .

How can I do that?

Answer 1

I'll join the fun with:

['12','34','35','231'].join(', ')

EDIT:

"'#{['12','34','35','231'].join("', '")}'"

Some string interpolation to add the first and last single quote :P

Answer 2

> a = ['12','34','35','231']
> a.map { |i| "'" + i.to_s + "'" }.join(",")
=> "'12','34','35','231'"

Answer 3

try this code ['12','34','35','231']*","

will give you result "12,34,35,231"

I hope this is the result you, let me know

Answer 4

array.map{ |i|  %Q('#{i}') }.join(',')

Answer 5

string_arr.map(&:inspect).join(',') # or other separator

Answer 6

I find this way readable and rubyish:

add_quotes =- > x{"'#{x}'"}

p  ['12','34','35','231'].map(&add_quotes).join(',') => "'12','34','35','231'"

Answer 7

> puts "'"+['12','34','35','231']*"','"+"'"
'12','34','35','231'

> puts ['12','34','35','231'].inspect[1...-1].gsub('"',"'")
'12', '34', '35', '231'

Answer 8

And yet another variation

a = ['12','34','35','231']
a.to_s.gsub(/\"/, '\'').gsub(/[\[\]]/, '')

Answer 9

irb(main)> varA
=> {0=>["12", "34", "35", "231"]}
irb(main)> varA = Hash[*ex.collect{|a,b| [a,b.join(",")]}.flatten]
...

Answer 10

irb(main):027:0> puts ['12','34','35','231'].inspect.to_s[1..-2].gsub('"', "'")
'12', '34', '35', '231'
=> nil

Answer 11

您可以使用一些函数式编程方法来转换数据：

['12','34','35','231'].map{|i| "'#{i}'"}.join(",")

Answer 12

suppose your array :

arr=["1","2","3","4"]

Method to convert array to string:

Array_name.join(",")

Example:

arr.join(",")

Result:

"'1','2','3','4'"

Answer 13

array.inspect.inspect.gsub(/\\[|\\]/, "")可以解决问题