字符串修剪红宝石

Question

我有以下字符串"survey_questions_attributes_1392746726560_question_title"我需要修剪从第一个字符开始直到第一个数字的所有字符串。怎么做？

Answer 1

我不使用String#[]

s = "survey_questions_attributes_1392746726560_question_title" 
s[/[a-z_]+(?:\d)/] = "" 
s # => "1392746726560_question_title" 

Answer 2

"survey_questions_attributes_1392746726560_question_title".sub /\D*/,'' 

Answer 3

String#slice方法支持正则表达式，所以你可以做：

[67] pry(main)> "survey_questions_attributes_1392746726560_question_title"[/\d.*/] 
=> "1392746726560_question_title" 

Answer 4

看哪的Rubular电源，沐浴在它的荣耀。

string = "survey_questions_attributes_223233333_question_title" 
puts string.sub(string.scan(/survey_questions_attributes_(.*)/)[0][0] , " ") 

Answer 5

"survey_questions_attributes_1392746726560_question_title".split(/\D+/, 2).last 
# => "1392746726560_question_title"