红宝石 | StringScanner begin_of_line？函数

StringScanner#beginning_of_line?() : begin_of_line?()是一个 StringScanner 类方法，用于检查扫描指针是否位于行首。

Syntax: StringScanner.beginning_of_line?()

Parameter: StringScanner values

Return: true – if scan pointer is at the beginning of the line otherwise return false

示例 #1：

# Ruby code for StringIO.beginning_of_line?() method
  
# loading StringIO
require 'strscan'
  
# declaring StringIO 
c = StringScanner.new('hi')
  
# beginning_of_line?() method
puts "StringScanner beginning_of_line? form : #{c.beginning_of_line?}\n\n"

输出 ：

StringScanner << bytes form : true

示例 #2：

# Ruby code for StringIO.beginning_of_line?() method
  
# loading StringIO
require 'strscan'
  
# declaring StringIO 
c = StringScanner.new('geeksforgeeks')
  
# beginning_of_line?() method
puts "StringScanner beginning_of_line? form : #{c.beginning_of_line?}\n\n"

输出 ：

StringScanner << bytes form : true