基於從Array

Question

我想分割基於我定義爲一個常數在開始陣列中的字符串預先定義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'=>'（各自包括所述陣列長度爲一個的兩個字符串的）是在開始時。如果沒有完成，

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

str.split(r) 

參見Regexp::union。