Ruby Array none?()用法及代碼示例

Array＃none？()：none？()是一個Array類方法，它檢查數組是否為空。

用法：Array.none?()

參數：數組

返回：true-如果數組沒有元素，否則返回false

範例1：

# Ruby code for none?() method 
  
# declaring array 
a = [18, 22, 33, nil, 5, 6] 
  
# declaring array 
b = [1, 4, 1, 1, 88, 9] 
  
# declaring array 
c = [] 
  
# none? method example 
puts "none?() method form:#{a.none?()}\n\n"
  
puts "none?() method form:#{b.none?()}\n\n"
  
puts "none?() method form:#{c.none?()}\n\n"

輸出：

none?() method form:false

none?() method form:false

none?() method form:true

範例2：

# Ruby code for none?() method 
  
# declaring array 
a = ["abc", "nil", "dog"] 
  
# declaring array 
c = [nil] 
  
# declaring array 
b = ["cow", nil, "dog"] 
  
  
# none? method example 
puts "none?() method form:#{a.none?()}\n\n"
  
puts "none?() method form:#{b.none?()}\n\n"
  
puts "none?() method form:#{c.none?()}\n\n"

輸出：

none?() method form:false

none?() method form:false

none?() method form: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 none?() function。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。