I found all the regex syntaxes below can work in ruby.

 irb(main):011:0> fruits = ["black berry    12","cherry 9","kiwi peach  15"]
 => ["black berry    12", "cherry 9", "kiwi peach  15"]
   
 irb(main):013:0> fruits.map {|s| s.match(/(.+?)\s+(\d+)/); [$~[1],$~[2]]}
 => [["black berry", "12"], ["cherry", "9"], ["kiwi peach", "15"]]
   
 irb(main):015:0> fruits.map {|s| s =~ /(.+?)\s+(\d+)/; [$1,$2]}
 => [["black berry", "12"], ["cherry", "9"], ["kiwi peach", "15"]]
   
 irb(main):017:0> fruits.map {|s| /(.+?)\s+(\d+)/ =~ s; [$1,$2]}
 => [["black berry", "12"], ["cherry", "9"], ["kiwi peach", "15"]]
 

It's too flexible though.

In scala just one syntax in normal.

 scala> val fruits = List("black berry    12","cherry 9","kiwi peach  15")
 val fruits: List[String] = List(black berry    12, cherry 9, kiwi peach  15)
   
 scala> val regex= """(.+?)\s+(\d+)""".r
 val regex: scala.util.matching.Regex = (.+?)\s+(\d+)
   
 scala> fruits.map{ case regex(x,y) => (x,y) }
 val res0: List[(String, String)] = List((black berry,12), (cherry,9), (kiwi peach,15))
 

Return to home | Generated on 09/29/22