Ruby StringScanner match?函数

StringScanner#match?() : match?()是StringScanner类的一个方法，它检查给定的模式是否从当前的扫描指针中匹配。

语法。StringScanner.match?()

参数。StringScanner的值

返回：位置 – 如果模式匹配，否则返回false

例子 #1 :

# Ruby code for StringScanner.match?() method
  
# loading StringScanner
require 'strscan'
  
# declaring StringScanner 
c = StringScanner.new("Mon Sep 12 2018 14:39")
  
# match?() method
puts "String Scanner match? form : #{c.match?(/\w+/)}\n\n"
  
# match?() method
puts "String Scanner match? form : #{c.match?(/\s+/)}\n\n"

输出:

String Scanner match? form : 3

String Scanner match? form : 

例子 #2 :

# Ruby code for StringScanner.match?() method
  
# loading StringScanner
require 'strscan'
  
# declaring StringScanner 
c = StringScanner.new("hellogeeks")
  
# match?() method
puts "String Scanner match? form : #{c.match?(/\w+/)}\n\n"
  
# match?() method
puts "String Scanner match? form : #{c.match?(/\s+/)}\n\n"

输出:

String Scanner match? form : 10

String Scanner match? form :