Ruby Array class include?()用法及代碼示例

Array＃include？()：include？()是一個Array類方法，用於檢查參數對象是否存在於數組中。

用法： Array.include?()

參數：obj-要查找的元素

返回：true-如果元素存在；否則為假

代碼＃1：include？()方法的示例

# Ruby code for include?() method 
  
# declaring array 
a = [18, 22, 33, nil, 5, 6] 
  
# declaring array 
b = [1, 4, 1, 1, 88, 9] 
  
# declaring array 
c = [18, 22, nil, nil, 50, 6] 
  
# include? 
puts "include?:#{a.include?(5)}\n\n"
  
# include? 
puts "include?:#{b.include?(0)}\n\n"
  
# include? 
puts "include?:#{c.include?(nil)}\n\n"

輸出：

include?:true

include?:false

include?:true

代碼2：include？()方法的示例

# Ruby code for include?() method 
  
# declaring array 
a = ["abc", "nil", "dog"] 
  
# declaring array 
b = ["cow", nil, "dog"] 
  
# declaring array 
c = ["cat", nil, nil] 
  
# include? 
puts "include?:#{a.include?("cat")}\n\n"
  
# include? 
puts "include?:#{b.include?("nil")}\n\n"
  
# include? 
puts "include?:#{c.include?("cat")}\n\n"

輸出：

include?:false

include?:false

include?:true

相關用法

注：本文由純淨天空篩選整理自mayank5326大神的英文原創作品 Ruby | Array class include?() operation。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。