StringScanner#empty?():empty?()是一個StringScanner類方法,它檢查stringIO是否為空。
用法:StringScanner.empty?()
參數:StringScanner值
返回:true-如果stringIO為空,否則返回false
範例1:
# Ruby code for StringIO.empty?() method
# loading StringIO
require 'strscan'
# declaring StringIO
c = StringScanner.new("Fri Dec 12 1975 14:39")
# empty?() method
puts "String Scanner empty? form:#{c.empty?()}\n\n"
輸出:
String Scanner empty? form:false
範例2:
# Ruby code for StringIO.empty?() method
# loading StringIO
require 'strscan'
# declaring StringIO
c = StringScanner.new("hellogeeks")
# empty?() method
puts "String Scanner empty? form:#{c.empty?()}\n\n"
輸出:
String Scanner empty? form:false
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