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Ruby Array class flatten!()用法及代碼示例


flatten!()是一個Array類方法,該方法返回展平的數組,如果不需要修改,則返回nil

用法:Array.flatten!()

參數:數組


返回:展平的數組;如果不需要修改,則為nil

範例1:

# Ruby code for flatten!() 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] 
  
# flatten! 
puts "flatten!:#{a.flatten!()}\n\n"
  
# flatten! 
puts "flatten!:#{b.flatten!()}\n\n"
  
# flatten! 
puts "flatten!:#{c.flatten!()}\n\n"    

輸出:

flatten!:[18, 22, 33, nil, 5, 6]

flatten!:[1, 4, 1, 1, 88, 9]

flatten!:

範例2:

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

輸出:

flatten!:["abc", "nil", "dog"]

flatten!:["cow", nil, "dog"]

flatten!:



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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 flatten!() 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。