基于从Array

Question

我想分割基于我定义为一个常数在开始阵列中的字符串预先定义的值如何分割字符串？

Answer 1

OPERATOR = ['<=','=>',':','=','<','>'] 

r = /\s*#{ Regexp.union(OPERATOR) }\s*/ 
    #=> /\s*(?-mix:<=|=>|:|=|<|>)\s*/ 

str = "Now: is the =time for all <= to =>" 

str.split(r) 
    #=> ["Now", "is the", "time for all", "to"] 

注意，我重新排序的OPERATOR的元件，使得'<='和'=>'（各自包括所述阵列长度为一个的两个字符串的）是在开始时。如果没有完成，

OPERATOR = [':','=','<','>','<=','>='] 
r = /\s*#{ Regexp.union(OPERATOR) }\s*/ 
    #=> /\s*(?-mix::|=|<|>|<=|>=)\s*/ 
str.split(r) 
    #=> ["Now", "is the", "time for all", "", "to"] 

str.split(r) 

参见Regexp::union。