Ruby-on-rails 将字符串拆分为数字数组
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Split a string into an array of numbers
提问by Trip
My string:
我的字符串：
>> pp params[:value]
"07016,07023,07027,07033,07036,07060,07062,07063,07065,07066,07076,07081,07083,07088,07090,07092,07201,07202,07203,07204,07205,07206,07208,07901,07922,07974,08812,07061,07091,07207,07902"
How can this become an array of separate numbers like :
这如何成为一个单独数字的数组，例如：
["07016", "07023", "07033" ... ]
回答by Matt Greer
result = params[:value].split(/,/)
String#split is what you need
String#split 正是你所需要的
回答by Phrogz
Note that what you ask for is not an array of separate numbers, but an array of strings that look like numbers. As noted by others, you can get that with:
请注意，您要求的不是一个单独的数字数组，而是一个看起来像数字的字符串数组。正如其他人所指出的，您可以通过以下方式获得：
arr = params[:value].split(',')
# Alternatively, assuming integers only
arr = params[:value].scan(/\d+/)
If you actually wanted an array of numbers (Integers), you could do it like so:
如果你真的想要一个数字数组（整数），你可以这样做：
arr = params[:value].split(',').map{ |s| s.to_i }
# Or, for Ruby 1.8.7+
arr = params[:value].split(',').map(&:to_i)
# Silly alternative
arr = []; params[:value].scan(/\d+/){ |s| arr << s.to_i }
